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Engineer
ArticleIcon ARTICLE FileIcon GALLERY HistoryIcon HISTORY

Quote
"Sentry comin' up!"
―Store Description

Description

The Engineer is a hardcore tower that attacks enemies with a rebar launcher and can build sentries within its range to assist with defense. It can be purchased from the store for Gem 4,500 and has a level requirement of Level 60. The Engineer is also available through a gamepass for Robux 2,250.

The Engineer has three range rings: the white ring is the attack range of the Engineer, the yellow ring is the placement range for sentries, and the red ring is the deadzone range in which the Engineer cannot fire and sentries cannot be built. The Engineer collects scrap when damaging enemies. The amount of scrap gotten per shot is equivalent to the damage dealt to an enemy. This scrap will fill up its Scrap Meter, which can be seen above its tower icon in the upgrade box or when you hover your cursor over it. When its Scrap Meter is full, the Engineer will briefly stop attacking to build a sentry. Within upgrades, the Engineer will build stronger sentries, however, they will require more scrap to be built. There is a limit to how many sentries can be built. If the Scrap Meter is filled up but the maximum number of sentries are placed, the Engineer will wait until a sentry is despawned or destroyed before building another sentry.

Sentries built by the Engineer are units, though they cannot move and will only be placed on the ground in the yellow range ring. They have health, which drains over time or decreases when hit by an enemy ability that deals damage, limiting the amount of time they can stay alive. The amount left before a sentry despawns can be seen with the duration bar above a sentry.

The Engineer is considered an all-round tower due to its cheap placement cost, decent DPS on early levels and very expensive upgrades with extremely high DPS later on.

The Engineer has a placement limit of six per player.

Upgrades

Level 1 - Precise Calculations - Cash (Gameplay Currency)$250
Engineer Level 1

+2 Damage Damage

+2 Range Range


Sell Price changes to Cash (Gameplay Currency)$333

Level 2 - Makeshift Radar - Cash (Gameplay Currency)$400
Radar

+2 Range Range

+Hidden Detection Hidden Detection

+Flying Detection Flying Detection

+1 Max Units


Sell Price changes to Cash (Gameplay Currency)$466

Level 3 - Auto Converter - Cash (Gameplay Currency)$1,800
Engi3

+6 Damage Damage

ā€¢2 Damage Damage

ā€¢0.308 Firerate Firerate

ā€¢20 Range Range

ā€¢40 Health Health

ā€¢30 Second Lifespan Lifespan

ā€¢36 Scrap Meter

ā€¢Lead Detection Lead Detection


Sell Price changes to Cash (Gameplay Currency)$1,066

Level 4 - Improved Blueprints - Cash (Gameplay Currency)$3,000
Engi4

+6 Damage Damage

+1 Range Range

1.208 > 0.758 Firerate Firerate

+1 Max Units

+Sentry Shield

Sell Price changes to Cash (Gameplay Currency)$2,066

Level 5 - Heavy Construction - Cash (Gameplay Currency)$12,500
Engineer Level 5

+12 Damage Damage

ā€¢5 Damage Damage

ā€¢0.168 Firerate Firerate

ā€¢20 Range Range

ā€¢60 Health Health

ā€¢45 Second Lifespan Lifespan

ā€¢120 Scrap Meter

ā€¢Hidden Detection Hidden Detection

ā€¢Lead Detection Lead Detection


Sell Price changes to Cash (Gameplay Currency)$6,233

Level 6 - Illegal Gun Parts - Cash (Gameplay Currency)$35,000
Engineerupgrade6

+20 Damage Damage

+2 Range Range

-0.5 Deadzone Range Deadzone Range

0.758 > 0.608 Firerate Firerate

+1 Max Units

ā€¢8 Damage Damage

ā€¢0.128 Firerate Firerate

ā€¢24 Range Range

ā€¢35x2 Splash Damage Splash Damage

ā€¢4 Rocket Firerate Firerate

ā€¢5 Explosion Range Explosion Range

ā€¢250 Health Health

ā€¢60 Second Lifespan Lifespan

ā€¢250 Scrap Meter

ā€¢Hidden Detection Hidden Detection

ā€¢Lead Detection Lead Detection


Sell Price changes to Cash (Gameplay Currency)$17,900

Stats Table

To see all the previous statistics of this tower, see the history page, while for the statistics without the Firerate Bug, visit the Firerate Bug page.

Engineer Stats
Level Total Price Damage Firerate Range Deadzone Range Build Range Max Units DPS[2] Combined DPS[3] Cost Efficiency[4]
0 Cash (Gameplay Currency)$750 4 1.208 13 1 4 1 3.31 5.49 Cash (Gameplay Currency)$136.61
1 Cash (Gameplay Currency)$1,000 6 1.208 15 1 4 1 4.97 7.15 Cash (Gameplay Currency)$139.86
2 Cash (Gameplay Currency)$1,400 6 1.208 17 1 4 2 4.97 9.33 Cash (Gameplay Currency)$150.05
3 Cash (Gameplay Currency)$3,200 12 1.208 17 1 4 2 9.93 22.91 Cash (Gameplay Currency)$139.68
4 Cash (Gameplay Currency)$6,200 18 0.758 18 1 4 3 23.75 43.22 Cash (Gameplay Currency)$143.45
5 Cash (Gameplay Currency)$18,700 30 0.758 18 1 4 3 39.58 128.86 Cash (Gameplay Currency)$145.12
6 Cash (Gameplay Currency)$53,700 50 0.608 20 0.5 4 4 82.24 402.42 Cash (Gameplay Currency)$133.44
Sentry Stats[5]
Level Sentry Health Damage Splash Damage Firerate Rocket Firerate Range Explosion Range Lifespan Scrap Meter DPS[6]
0ā€“2 Sentry 20 1 N/A 0.458 N/A 18 N/A 30s 16 2.18
3ā€“4 Rifle Sentry 40 2 N/A 0.308 N/A 20 N/A 30s 36 6.49
5 Minigun Sentry 60 5 N/A 0.168 N/A 20 N/A 45s 120 29.76[7]
6 War Machine Sentry 250 8 35x2 0.128 4 24 5 60s 250 80[8]

Skins

To see all the upgrades of a skin, see the gallery page.

DuckyEngineerIcon MechanicEngineerIcon HolidayEngineerIcon HeartbreakEngineerIcon
Skin Ducky Mechanic Holiday Heartbreak
Rarity Legendary Legendary Event Legendary
Daily Store Cost Coin 4,500 Robux 560 Coin 5,000 Coin 7,000
Obtained From Ducky Skincrate,
Hunting Season
Deluxe Skincrate,
Philips x TDS Season
Jolly Skincrate,
Violent Night Season
Lovely Skincrate
GravediggerEngineer Plushie Engineer Icon PhantomEngineerSkin YTEngiIcon
Skin Grave Digger Plushie Phantom Wikia
Rarity Event Exclusive Legendary Rare
Daily Store Cost N/A N/A N/A Coin 3,000
Obtained From Lunar Overture Season Plushie Code[9] Phantom Skincrate Daily Skin Store
CrazRexEngineerIcon FallenEngineerIcon DarkFrostEngineerIconIG
Skin CrazRex Fallen Dark Frost
Rarity Rare Legendary Legendary
Daily Store Cost Coin 3,000 N/A N/A
Obtained From Daily Skin Store Mission Quests Operation I.C.E Premium Battle Pass

Strategy

  • The Engineer is a very powerful late-game tower, as its DPS combined with its maximum number of sentries is the second highest in the game.
    • Since its sentries have a shield that makes them immune to damage, it can also be powerful against major bosses like the Void Reaver. Do note that the shield is only active when the Engineer is not stunned.
      • You can use the Medic to cleanse the stuns from the Engineer, bringing back the shield for its sentries. This can make the Engineer's sentries practically invulnerable to damage.
  • The Engineer can be used as an early game tower due to its decent DPS and sentry DPS and its cheap cost.
    • Since the Engineer has flying detection and lead detection, while its units also have lead detection from Level 0, it can also be used as an early game tower in Hardcore mode.
    • Placing multiple Level 3 Engineers is cost-effective due to its ability to place Rifle Sentries.
  • The sentries are not affected by any buffs or debuffs, but the Engineer is still affected by all of them.
  • Due to how expensive the Engineer is, the DJ Booth is highly recommended, as it can greatly decrease the Engineer's cost.
    • It can also be useful for increasing the Engineer's attack range.
      • Neither the sentry building range nor the deadzone range will be affected.
  • The Engineer needs to fill its Scrap Meter before it can build a sentry, which it can fill up by dealing damage to enemies. Using the Commander, you can summon sentries faster since the damage is dealt faster.
    • The Mercenary Base can also increase its damage, which also affects its Scrap Meter, allowing it to summon sentries even faster.
      • The Field Medic cannot heal or shield the Engineer's sentries, as they are not considered humanoids.
    • It is recommended to set the Engineer's targeting to Strongest to fill its Scrap Meter faster due to the higher damage dealt and minimal damage wasted.
    • Do note that when the Engineer is building a sentry, it is unable to attack for a short while, allowing enemies to pass through, especially hidden enemies.
      • This is not an issue on later levels as the Engineer can have more than a single sentry. Having other towers alongside the Engineer can also help mitigate this issue.

Trivia

  • The Engineer is the only tower to have three range rings.
    • The white ring is the Engineer's range, the yellow ring is the sentry placement range, and the red ring is a deadzone range where the Engineer cannot fire or build sentries.
  • The Engineer tower is very loosely based on the Engineer Monkey from the Bloons Tower Defense series.
    • The rebar launcher used by the Engineer is a reference to a similar weapon used by MUL-T from Risk of Rain 2.
    • The Engineer's sentry shield is based on the Wrangler shield, used by the Engineer from Team Fortress 2.
      • The store description of the Engineer is a reference to a voice line said by the Team Fortress 2 Engineer, "Sentry goin' up!".
  • While unlikely to be seen as this can only happen through bugs, the shield sentries get at Level 4+ does not make them just immune to enemy abilities, but every form of damage, including damage from towers.
  • The Engineer is the first tower that has 6 upgrades.
  • The Engineer went through multiple changes before being released.
    • Rather than using a rebar launcher, it wielded a pistol, which, with levels, would be replaced with various rifles.
    • The Engineer had five sentries instead of four, which had different purposes.
      • The first three sentries were single target sentries, which would only deal damage to one enemy. These sentries are still in the game, with them being the Sentry, Rifle Sentry and Minigun Sentry.
      • The fourth sentry was the Missile Sentry, which was a quad missile launcher that would deal splash damage.
      • The fifth and last sentry was the Support Beacon, which would reveal hidden enemies in its range.
      • Due to there being multiple types of sentries, you would be able to pick what kind of sentries the Engineer would place.
  • The Engineer alongside the Electroshocker and the Militant are the only towers that detect flying enemies that do not gain flying detection at Level 0.
  • The Sniper, Engineer, DJ Booth, Pursuit and Commander are the only towers that can damage all enemies, no matter their immunities.
  • The Engineer Level 6 upgrade is most likely a reference to Illegal Gun Parts from Terraria.
  • The Engineer is canonically Brawler's sister.

Update History

For previous cosmetic variations, see the gallery page.

  • 17 April 2022 - v1.2.0
    • Engineer added.
      • Level 1 upgrade name changed from Percise Calculations to Precise Calculations later the same day.
    • Bug: Sentry ranged damage does not increase the Total Damage counter.
    • Bug: Sentry collision damage does not increase the Total Damage counter.
    • Bug: Sentry range can be increased by the DJ Booth.
    • Bug: Engineer does not have lead detection at all levels.
    • Bug: Sentries can be built in the deadzone range.
    • Bug: Engineer can collide with players.
  • 23 April 2022 - v1.2.1
    • Sentries can no longer collide with enemies.
    • Statistical changes:
      • Level 4
        • Sentries now gain a shield which protects them from damage when it is active.
    • New skin: Ducky
    • Bugfix: Sentries can no longer be built in the deadzone range.
    • Bugfix: Sentry ranged damage now increases the Total Damage counter.
  • 13 May 2022 - v1.2.2
    • Bugfix: Engineer can no longer collide with players.
  • 30 May 2022 - v1.2.4
    • Gamepass price decreased from Robux 4,000 to Robux 3,000.
  • 1 June 2022 - v1.2.4b
    • Gamepass price increased from Robux 3,000 to Robux 4,000.
  • 26 June 2022 - v1.2.4e
    • Gamepass taken offsale.
  • 5 August 2022 - v1.3.1
    • Bugfix: Sentry range can no longer be increased by the DJ Booth.
  • 8 August 2022 - v1.3.1b
    • Bug: Engineer sometimes does not deal damage when an enemy is hit by its projectile.
  • 2 September 2022 - v1.3.2
    • Bugfix: Engineer now deals damage properly.
  • 31 October 2022 - v1.4.2
    • Engineer is available through a gamepass for Robux 4,000.
    • Bugfix: Engineer now has lead detection.
  • 11 November 2022 - v1.4.2d
    • New skin: Mechanic
  • 24 November 2022 - v1.5.0b
    • Gamepass price decreased from Robux 4,000 to Robux 3,200.
  • 1 December 2022 - v1.5.0d
    • Gamepass price increased from Robux 3,200 to Robux 4,000.
  • 21 December 2022 - v1.6.0
    • Gamepass price decreased from Robux 4,000 to Robux 3,000.
    • Firerate increased for units due to Firerate Bug getting more severe for units.
    • Skin rarity added to all skins.
    • Statistical changes:
      • Base
        • Firerate decreased from 2.008 to 1.508.
        • Sentry firerate increased from 0.508 to 0.53.
      • Level 1
        • Cost decreased from Cash (Gameplay Currency)$350 to Cash (Gameplay Currency)$250.
      • Level 3
        • Firerate changed from 2.008 > 1.808 to 1.508 > 1.258.
        • Rifle Sentry firerate increased from 0.258 to 0.28.
      • Level 4
        • Firerate changed from 1.808 > 1.008 to 1.258 > 1.008.
      • Level 5
      • Level 6
    • New skin: Holiday
  • 6 January 2023 - v1.6.0e
    • Gamepass price increased from Robux 3,000 to Robux 4,000.
  • 9 January 2023 - v1.6.0f
    • Firerate decreased for units due to Firerate Bug getting less severe for units.
    • Statistical changes:
  • 14 February 2023 - v1.4.2
    • New skin: Heartbreak
  • 31 March 2023 - v1.6.4
    • Statistical changes:
      • Base
        • Firerate decreased from 1.508 to 1.258.
        • Range decreased from 14 to 12.
        • Max units decreased from 2 to 1.
      • Level 1
        • Range increased from +1 to +2.
      • Level 2
        • Deadzone range decreased from +0 to -1.
      • Level 3
        • Cost increased from Cash (Gameplay Currency)$1,600 to Cash (Gameplay Currency)$1,750.
        • Firerate changed from 1.508 > 1.258 to 1.258 > 1.008.
        • Damage increased from +3 to +5.
      • Level 4
        • Cost decreased from Cash (Gameplay Currency)$3,500 to Cash (Gameplay Currency)$3,250.
        • Damage increased from +5 to +7.
        • Renamed from Pressure Tank to Improved Blueprints.
      • Level 5
        • Damage increased from +10 to +15.
        • Max units increased from +0 to +1.
      • Level 6
        • Cost decreased from Cash (Gameplay Currency)$35,000 to Cash (Gameplay Currency)$33,500.
        • Deadzone range decreased from +0 to -1.
        • Max units decreased from +1 to +0.
  • 7 April 2023 - v1.7.0
    • You can now see the Engineer's scrap meter when you hover your cursor over it.
    • Gamepass price decreased from Robux 4,000 to Robux 2,500.
    • Bug: Sentry shields are sometimes not visible.
  • 15 April 2023 - v1.7.1a
    • Gamepass price increased from Robux 2,500 to Robux 4,000.
  • 5 May 2023 - v1.7.3
    • Ducky skin rarity changed from Common to Legendary.
  • 4 July 2023 - v1.8.2d
    • Gamepass price decreased from Robux 4,000 to Robux 3,000.
  • 6 July 2023 - v1.8.2e
    • Gamepass price increased from Robux 3,000 to Robux 4,000.
  • 31 October 2023 - v1.9.0g
    • New skin: Grave Digger
  • 24 November 2023 - v1.9.4
    • Gamepass price decreased from Robux 4,000 to Robux 2,600.
    • New skin: Plushie
  • 29 November 2023 - v1.9.4a
    • Gamepass price increased from Robux 2,600 to Robux 4,000.
  • 21 December 2023 - v1.11.0
    • New skin: Phantom
  • 28 January 2024 - v1.12.0
    • New skin: Wikia
  • 10 February 2024 - v1.13.0
    • Statistical changes:
    • Bug: Enemies that touch the hitbox of a sentry with a shield take high amounts of damage.
  • 12 February 2024 - v1.13.0b
    • Gamepass price decreased from Robux 4,000 to Robux 3,000.
    • Statistical changes:
  • 24 February 2024 - v1.14.0
    • Statistical changes:
      • Base
        • Damage increased from 3 to 4.
        • Firerate increased from 1.258 to 1.508.
        • Sentry firerate decreased from 0.508 to 0.458.
        • Sentry scrap meter increased from 10 to 16.
      • Level 2
        • Cost decreased from Cash (Gameplay Currency)$400 to Cash (Gameplay Currency)$300.
        • Range increased from +1 to +3.
        • Deadzone range decreased from -1 to -2.
      • Level 3
        • Damage increased from +5 to +6.
        • Firerate changed from 1.258 to 1.508 > 1.258.
        • Rifle Sentry scrap meter increased from 20 to 36.
      • Level 4
        • Cost increased from Cash (Gameplay Currency)$3,250 to Cash (Gameplay Currency)$3,500.
        • Damage increased from +5 to +6.
        • Range decreased from +3 to +1.
      • Level 5
        • Cost increased from Cash (Gameplay Currency)$12,500 to Cash (Gameplay Currency)$13,750.
        • Damage increased from +15 to +17.
        • Minigun Sentry scrap meter increased from 50 to 140.
      • Level 6
  • 8 March 2024 - v1.15.0
    • Bugfix: Enemies that touch hitbox of a sentry with a shield no longer take high amounts of damage.
  • 10 May 2024 - v1.21.0
    • Bug: Sentry lifespans do not scale with Time Scale properly.
  • 18 May 2024 - v1.22.0
    • Statistical changes:
      • Base
        • Firerate decreased from 1.508 to 1.258.
      • Level 2
        • Cost increased from Cash (Gameplay Currency)$300 to Cash (Gameplay Currency)$400.
        • Max units increased from +0 to +1.
      • Level 3
        • Cost increased from Cash (Gameplay Currency)$1,750 to Cash (Gameplay Currency)$2,000.
        • Firerate changed from 1.508 > 1.258 to 1.258 > 1.108.
      • Level 4
        • Cost increased from Cash (Gameplay Currency)$3,500 to Cash (Gameplay Currency)$3,750.
        • Firerate changed from 1.258 > 1.008 to 1.108 > 0.858.
      • Level 5
        • Max units decreased from +1 to +0.
        • Minigun Sentry now has hidden detection.
      • Level 6
  • 23 May 2024 - v1.23.0
    • Gamepass price decreased from Robux 3,000 to Robux 2,250.
  • 27 May 2024 - v1.23.2a
    • Gamepass price decreased from Robux 2,250 to Robux 1,800.
  • 29 May 2024 - v1.23.3a
    • Gamepass price increased from Robux 1,800 to Robux 2,250.
  • 21 June 2024 - v1.25.0
    • Bug: Damage is no longer boosted by damage buffs.
    • Bug: War Machine Sentry splash damage is boosted by damage buffs.
  • 19 July 2024 - v1.26.0
    • New skin: DraxRex
  • 2 August 2024 - v1.27.0
    • Statistical changes:
      • Base
        • Firerate decreased from 1.258 to 1.208.
        • Range increased from 12 to 13.
        • Build range decreased from 5 to 4.
        • Deadzone range decreased from 3 to 1.
        • Sentry lifespan increased from 20s to 30s.
      • Level 2
        • Range decreased from +3 to +2.
        • Deadzone range increased from -2 to 0.
      • Level 3
        • Cost decreased from Cash (Gameplay Currency)$2,000 to Cash (Gameplay Currency)$1,800.
        • Firerate changed from 1.258 > 1.108 to 1.208.
        • Rifle Sentry firerate increased from 0.258 to 0.308.
      • Level 4
        • Cost decreased from Cash (Gameplay Currency)$3,750 to Cash (Gameplay Currency)$3,000
        • Firerate changed from 1.108 > 0.858 to 1.208 > 0.758.
      • Level 5
        • Cost decreased from Cash (Gameplay Currency)$13,750 to Cash (Gameplay Currency)$12,500.
        • Damage decreased from +17 to +12.
        • Minigun Sentry scrap cost decreased from 140 to 120.
      • Level 6
    • Bugfix: Regular damage is now boosted by damage buffs.
  • 21 August 2024 - v1.28.0
    • New skin: Fallen
    • Bugfix: Sentry shields now always appear instead of only appearing after the Engineer was stunned.
  • 16 November 2024 - v1.41.5
    • Bug: Sentry lifespans no longer work correctly, making them survive for significantly longer than they should and only rarely disappearing.
  • 18 November 2024 - v1.41.6
    • Bugfix: Sentry lifespans now work correctly.
  • 20 November 2024 - v1.42.0
    • Bugfix: Sentry lifespans now scale correctly with Time Scale.
  • 27 November 2024 - v1.43.0
    • Gamepass price decreased from Robux 2,250 to Robux 1,462.
  • 3 December 2024 - v1.43.3
    • Gamepass price increased from Robux 1,462 to Robux 2,250.
  • 16 December 2024 - v1.46.0
    • New skin: Dark Frost
  • 25 December 2024 - v1.47.4
    • Gamepass price decreased from Robux 2,250 to Robux 1,575.
  • 28 December 2024 - v1.47.5b
    • Gamepass cost increased from Robux 1,575 to Robux 2,250.
  • 15 January 2025 - v1.49.0
    • Bug: Units have lead detection.

Notes

  1. ā†‘ Through War Machine Sentry splash damage, flying enemies may be hit indirectly if another detectable enemy is nearby, but units from this tower can never directly target flying enemies.
  2. ā†‘ Does not account for time taken to build Sentries.
  3. ā†‘ Combined DPS is the total DPS of the tower itself and the max number of units at that Level.
  4. ā†‘ Uses combined DPS in the calculation.
  5. ā†‘ Sentries are not affected by all buffs and debuffs.
  6. ā†‘ Assumes only one sentry is placed down and does not include Engineer DPS.
    DPS is calculated as Gun DPS + Splash DPS.
  7. ā†‘ Rev-up time of 1.5 seconds is not considered into the DPS.
  8. ā†‘ 62.5 Gun DPS + 17.5 Rocket DPS.
    Rev-up time of 1.5 seconds is not considered into the DPS.
    Rocket DPS assumes only one enemy is hit and receives full splash damage.
  9. ā†‘ Code obtained by purchasing an Engineer Plush.


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