I’m not sure why the roguelike tag is used in the game info. There’s no meta-progression, and you don’t get new weapons or upgrades during a run. I wouldn’t count the basic stat choice (+1 HP, +1 damage, or +1 defense per level) as meaningful progression.

When you die, you lose all your XP and items - but if you beat the level on your next attempt, you can retrieve them. Fail again, and they’re gone for good.

Overall, the game is absolutely worth it - at least for the style and atmosphere. The combat is tight and fun, too.

EDIT: I finished it. There is a difficulty spike starting with ~9th chapter. The game gets quite frustrating from that point, and I was dying often. Last levels have too many enemies, and since there is no healing you either have to fight close to perfect or you start over. Starting over is never fun, but here it's even worse because the enemies spawn in exactly same spots with the same time intervals, so you are playing the exact same level again, I think randomness could've made it more interesting.