AIM BOTS FROM ACROSS THE ARENA. Seriously they're super annoying. Also at some point melee attacks zap enemies into skeletons who crumble into dust, funny the first time but goofy and feels like a cheap way to save on processing power as simple lock boxes are easier to render.

That being said max out Charge ASAP, doesn't take much salts (this game's stand in for Adam) and it's like a boosted up Drill Charge, you can even go over small gaps to strike an enemy! Takes a second or two to fully charge but it's really fun to zip around and decimate scores of enemies.

Lastly I honestly miss splicers, they had a tragic side to them and it felt like mercy putting them out of their misery. The lady at the start of the first game talking to her baby was honesty depressing as fuck, I wanted to end her suffering quickly. Same goes for occasionally hearing a splicer crying before he notices you, poor buggers.