I have no complaint about dashing controls, they're fine as they are.
My biggest problem is that effects from Thorn Skin Disease and Mutant Armor don't work. I tried starting a new save file twice, but it still has no effect.
3/5. The controls were rough sometimes. It didn't seem to be very quick or snappy in the controls, which made them basic or requiring of waiting, which wasn't fun. Also walljumping was terrible because I would often get the sound indicating a successful walljump but not actually performing one.
Too much penalty for small mistakes. The player switching system was little more than annoying. It ended up too tedious a game to be very enjoyable. 2/5