I was quite impressed by the design and polish of this one. The UI is beautiful, the game plays very well and the limitation is interesting because you get so much stronger at the cost of health, it's not just a gimmick, it's impactful.
One feedback I can give, which was already mentioned by someone else, is that the dialog, as cool as it is, interrupts gameplay a lot. Maybe the first time you got hit could trigger a full cutscene but the subsequent could be like overlay dialogs in which you could move and keep going while they're happening.
In the end I didn't use melee much because it puts you in range of danger, so it's way more risky than using the ranged attack.
It's a very fun game to play, and a lot of work for just one person. Great job!