Engineer Rework
- 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 
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.
Sentries Shield are based on chance. It has a 60% chance to gain a shield at Level 5.
The Engineer is considered an all-round tower due to its cheap placement cost, decent DPS on early levels and has very expensive upgrades with extremely high DPS later on.
The Engineer has a placement limit of six per player.
Upgrades
+3 Range 
-2 Deadzone Range 
+Hidden Detection 
+Flying Detection 
Sell Price changes to
+2 Damage 
+2 Range
Sell Price changes to
+6 Damage
1.508 > 1.258 Firerate 
•2 Damage
•0.258 Firerate
•20 Range
•40 Health 
•30 Second Lifespan
•36 Scrap Meter
Sell Price changes to
+6 Damage
+1 Range
1.258 > 1.008 Firerate
+Sentry Shield
+1 Max Units
Sell Price changes to
+17 Damage
+1 Max Units
•5 Damage
•0.168 Firerate
•20 Range
•60 Health
•45 Second Lifespan
•140 Scrap Meter
Sell Price changes to
+15 Damage
+2 Range
-0.5 Deadzone Range
1.008 > 0.808 Firerate
+1 Max Units
•8 Damage
•0.128 Firerate
•22 Range
•33x2 Splash Damage 
•4 Rocket Firerate
•5 Explosion Range 
•120 Health
•60 Second Lifespan
•300 Scrap Meter
Sell Price changes to
Stats Table
| Engineer Stats | |||||||
|---|---|---|---|---|---|---|---|
| Level | Total Price | Damage | Firerate | Range[3] | Deadzone Range | Max Units | DPS[4] |
| 0 | |
6 | 1.358 | 13.5 | 6 | 2 | 4.41 |
| 1 | |
8 | 1.308 | 14 | 4 | 2 | 6.11 |
| 2 | |
8 | 1.268 | 16 | 4 | 2 | 6.13 |
| 3 | |
10 | 0.658 | 16 | 4 | 3 | 15.19 |
| 4 | |
12 | 0.558 | 18 | 4 | 4 | 21.5 |
| 5 | |
20 | 0.408 | 20 | 4 | 4 | 49.01 |
| 6 | |
100 | 0.948 | 25 | 4 | 5 | 105.48 |
| Sentry Stats[5] | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Level | Sentry | Health | Damage | Splash Damage | Firerate | Range | Lifespan | Scrap Meter | DPS[6] |
| 0–1 | Sentry | 20 | 1 | N/A | 0.508 | 18 | 20s | 24 | 1.96 |
| 2–3 | Rifle Sentry | 40 | 2 | N/A | 0.358 | 20 | 30s | 40 | 5.58 |
| 4-5 | Minigun Sentry | 60 | 8 | N/A | 0.308 | 20 | 40s | 120 | 25.97[7] |
| 6 | War Machine Sentry | 120 | 12 | 40x2[8] | 0.188 | 24[9] | 50s | 300 | 87.41[10] |
Strategy
TBA
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 Cryomancer can damage sentries spawned by a Level 0–3 Engineer, though at Level 4+, it will be unable to do so unless the Engineer is stunned.
- 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 are the only towers that detect flying enemies that do not gain flying detection at Level 0.
- The Engineer and Sniper are the only towers that can damage any enemy, regardless of their immunities.
- The Engineer Level 6 upgrade is most likely a reference to Illegal Gun Parts from Terraria.
Notes
- ↑ Through splash damage, hidden enemies may be hit indirectly if another detectable enemy is nearby, but units from this tower can never directly target hidden enemies.
- ↑ Through 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.
- ↑ The sentry placement range is 5 for all levels.
- ↑ Does not include Sentry DPS.
Does not account for time taken to build Sentries. - ↑ Sentries are not affected by all buffs and debuffs.
- ↑ Assumes only one sentry is placed down and does not include Engineer DPS.
DPS is calculated as Gun DPS + Splash DPS. - ↑ Rev-up time of 1.5 seconds is not considered into the DPS.
- ↑ Rockets have a firerate of 4.
- ↑ Explosion range of the rockets is 5.
- ↑ 67.41 Gun DPS + 20 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.