Nice job for a first bevy experience! I like the idea of movement causing damage to the player, although as a result I ended up basically not moving at all most of the time. It might be nice to try having movement work without damaging you, but provide a “sprint” option that damages the player or something like that?
Movement speed tied to health is interesting too – at first I was confused why I was going so slow, but then I reread the description and realized. It could be interesting to experiment with the inverse (slow to start, fast as your health depletes) since it might result in some more interesting late-game play instead of feeling like you’re “doomed” once your health gets too low.
Hope you had fun making this and learning about Bevy!