Got it in Ukrain bundle and just tried yesterday... and heck, I was far from expecting the fun it'd provide me.
I wonder why it didn't seem that popular (considering Hollow Knight and Dead Cells)... maybe people already saw too many dark-themed metroidvanias?
Though, even with each run bringing more than enough RNG (in a very nice way, that is), the non-random bosses, worlds, core abilities and story reminds me too much that I'm still playing on the "same" map as each previous run.
Though, it's still a very good game if I put that aside and just focus on remembering what I learnt before to progress easier through the map. The harder modes should also definitely bring me some more fun.
One of the best aspect tho : Even though the game is pretty detailed, it runs flawlessly on integrated graphics.
Also, if walljumping precisely, one can actually climb a wall, which allows to pass some rooms that would require double jump, without even unlocking that ability.