Fun puzzle game! Definitely a low margin for error as others have mentioned but the core concept is a lot of fun. The addition of cold zones, etc is a great way to shake up the formula too. My biggest feedback is that there is a delay between when you hit a key and it gets picked up, or when you hit a button and it actually goes off. This lead to a couple of times where I wasn't sure if I had actually hit it or not which was almost always fatal due to the short amount of time I had to work with.