As Duck already said: This game is extremely underrated. It's a shame that people see "EWW, Not playable in browser" and just skip the game (this is why nobody plays my game too...). And this game here deserves way more attention.
Graphics are great and fit together well. Small details like chaning background does the trick. The game is really satisfying and it may be that one game in this jam that I played the longest time. But the best thing for me is probably the pretty good difficulty curve. I never had the feeling to get overwhelmed by the amount of enemies nor was it too easy. The difficulty increased in a smooth way so that you just never have a negative feeling about playing the game. And THAT is what you see in only a veeeeery few games that are submitted in any jam!