i have 2 ideas for this,

Idea 1. Zelda theme (speciffically Link)

Shot gun replaced with : Lightning Rod (casts out electricity like the short ciruit but
father and a bit stronger)
Pistol replaced with : Sling Shot (basically pistol reskin)
PDA replaced with : Blue Banjo (instead of an ocarina)

+ 20% Mele Damage to other players
+ 20% Resistance from all sources

- 10% swing speed





IDEA 2.

Call it the "Coniger (engie's family name) Hammy Down" (past through the generations)
or if you want it to rhime the Coniger Carrier

"Dell,
It was said that the Conigers of the past were once 18 feet tall and the only way for them to get wood for their sentries was to chop it down themselves with only a wrench.....specifically this one. Make me proud boy!
~ Grandpa"

(so engie can have usable things in ye olden days)

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[Sentry is replaced with an automatic arrow launcher (launches 1 silent arrow a second. arrow only does 5 damage but has a further range compared to normal sentries)]


[Teleporter is replaced with a wooden gate that you have to walk into rather than onto (but the on portion could just be invisible]

Pro:
Hidden stats:
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+ Longer mele range
+ 15% defense against all sources (ranged mele whatever)
+ 15% damage bonus for your wrench

Con:

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- Can only repare the well. all other items must be rebuilt from scratch.

+ 15% longer building construction time

- 10% swing speed



Summary: engie gets weak but different toys he can play with, in exchange for a stronger mele