I think you've struck gold with the mechanic ideas and how they're implemented, including the theme! It's quite a genius idea to base a game around the concept of three heroes murdering eachother for the ultimate goal of sick drops. The gameplay is good, and it's an interesting experience for a small game. Some of the puzzles can be a bit too finicky, and some that need split second timing. For example, the ice block puzzle that has one hole with spikes, and one without. Otherwise, it's a good experience!
Personally, I could see it having quite a good amount of potential with more mechanics and a bigger vision. Kudos!