I gave it 4-5 attempts but I never managed to make it a full loop. Only having one life is very punishing. Perhaps a way to block/prevent an attack could remedy this.

I like the idea of looping through the same rooms, its gives the idea of being lost in some kind of dungeon. I see lots of potential to go deeper in this idea. Perhaps the rooms keep getting more difficult?

Congratulations on making a game, its no small feat!