The game is quite gloomy as the tittle suggests.
The game itself and the gameplay doesn't look bad.
However i can't get too much in the store since i keep dying relatively early on after the 1st or 2nd shop. I'd suggest it's a bit luck dependant.
There's an RNG element where every level you pass through is never the same as the last one. Item drops are random as well.
Keep in mind you can't save, and when you die, you have start from the very beginning all over again.

It's a good game, but i feel like it's more oriented towards platform/fighter lovers or more hardcore gamers. Or someone who just likes to grind a lot..