It is a Mega Man X clone with Roguelike features. Specifically, it has procedural generated levels and permadeath. (Presumably due to the permadeath factor, falling into a pit is not an instant death, instead you respawn after taking a bit of damage.)
I haven’t played the game since 2016. It had changed since then. (And apparently added two rather expensive DLC characters. Side note: The base game has two characters, an X clone and a Zero clone.) It had plenty of diehard fans back when I played it, but I was a bit less impressed. I didn’t find the level sections that interesting, and the action wasn’t “Megaman” enough for me.