I attempted to make a mechanical mutant quirk. Let me know how I did and what yall think :3 (be honest)

Quirk (Jack hammer forearms):

(Mutant quirk)

——-——-——-——-——-——-——-—————

Instead of having regular flesh and nerves for their forearms the user has compact pneumatic jackhammers made of dense bone-like metal and reinforced muscle tissue. The forearms constantly build up pressure before violently firing rapid reciprocating motion similar to a demolition jackhammer. There are vents along the underside of the forearms that release hot compressed air mixed with steam from overheating and internal friction, bursting out in loud rhythmic bursts during sustained attacks.

——-——-——-——-——-——-——-—————

Pros:

Extreme blunt-force power capable of breaking concrete and armor

Continuous impact makes attacks hard to block or absorb

Can use their metallic forearms to block attacks

——-——-——-——-——-——-——-—————

Cons/drawbacks:

Heavy strain on shoulders and upper body over time

Loud operation makes stealth nearly impossible

Overheats with extended use, forcing cooldown periods