An interesting game from the thematic sense of things. Rather than mechanically you took the jam's theme in a direction more tied to the environmental setting, aka a you paly as a microbe inside a body.
Overall, creating a metroidvania styled game in just 4 days is an achievement in of itself.
Whilst I was enjoying the game, the dash attack which most of the platforming seems to be cantered around is just too buggy. I would frequently dash into and kill and enemy which would should then recharge my dash, only it doesn't and I fall to my death. Sometimes it would flawlessly and felt great and juicy to use, other times it just failed. Eventually I hit a room I couldn't get past due to this inconsistency.