This was fun! Funny story, I saw the instructions on the title screen, went "sweet, Binding of Isaac controls!", and proceeded to do everything backward until I realized the game actually had the opposite of BoI controls and crossed my hands over each other so I wasn't fighting my muscle memory, so I have to agree with what others are saying about WASD and arrow keys. I really liked the tradeoff of moving slower while healing, and just wish it felt like it mattered more (or sooner, at least). The game started to drop frames at around score 150 or so, which seems odd for a game that seems pretty easy on processing, but I can't say if this was a too many enemies on screen or a web build or a memory leak issue. But overall, this is a nicely put together game!