I have 3 complaints, (other than them the game is amazing)
1. the poles sometimes don't let me jump off
2. the bullet hitbox is messed up, sometimes my bullets go right through the enemies, and you can almost never hit the explosive barrels
3. The (First) boss is annoying to beat just for the soul reasons of the falling rocks, almost 100% of the time they're what I die to, and seeing the bullet hitbox is messed up, you can almost never hit it (the boss) with bullets, not to mention you can't roll through the rocks, which makes it especially annoying when you get really unlucky and a rock falls right in front while your rolling, or when you're attacking and a rock falls on your head.