I really appreciate the attempt to make something original and not just "a platformer with a worm".
I don't like that after a movement, the worms move and then if they are adjacent they attack me. It means that potentially I can be attacked from every worm at distance 3, which is a little to much for me to control and It feel a little random to avoid enemy. Just a personal taste, maybe it was intended this way.
I don't have the impression that the power ups are actually doing something. Sometimes I recive 12 damage, sometimes 18, in both the case I'm strong or neutral against that worm. Powerups only last ten turns, and it is really difficult to intentionally reach a worm to start a fight. If I play well to face a combat with a type advantage I would like a big reward, not a slightly advantage.
I instead appreciate how the board fill up with parasite during the game. It feels like a real spreading