I love me a good roguelike. This is a nice throwback and it looks great for a 1K game!
I do feel like your chance of success is luck-based, mostly because your HP does not regenerate over time. This makes it difficult to rest up before taking on that last enemy and advance to the next level.
Then again, this is a 1K compo, and this is a lovely homage to a timeless game. Excellent!