We wanted the player to feel strong so we made really OP guns but we never got time to balance them or add the enemies we planned haha so hes just a demi-god plowing through the viruses right now. The shotgun is a FPS-killer quite literally, whevener we tested the game we only had 4 enemies at once and right before submission we added a bunch of enemies just so the player could have some fun, that resulted in massive FPS drops when particles spawn and as it was a last minute addition we didnt manage to fix it. Yeah i think we def can limit it, one of the major issue is one of the viruses multiplies on death so when you kill one of them with the shotgun the bullets also kill the multiplications which ends up being FPS hell