Pretty basic, but a nice game overall. It clearly lacks cues, animations, smooth movement and transitions, maybe some effects. Main parts are there, but the feel of the game is not very strong. Slowmo adds a lot of depth, basically changing gameplay from surviving to a short feast on orange circles. Because slowmo becomes an essential part of a game, I think it needs more focus: louder and brighter cues on when it's refilled, maybe collectables to refill instantly or power-ups for temporary infinite slowmo, etc. Also game feels too difficult for a jam entry, most players won't be able to play for more than 1 minute. Despite all that, I enjoyed my time in the game, it has a complete and addicting gameplay loop, good job!
P.S. Also I encountered a strange bug where tutorial never ended and repeated again on pressing space. I reloaded game page and it worked fine on second try.