I downloaded a copy of the game on PC to give it a try, and it was alright, but it wasn't anything fantastic. I might pick it up if the price drops to below $5 or so, but I think I'll probably give it a pass in the meantime. The gameplay seems to essentially boil down to whether or not you get lucky and find good upgrades. If you do, you can beat the game in an hour, and if you don't, you die and have to keep restarting until you do. (This is pretty typical in rogue-likes, of course, so it's really more that it's not a genre I really enjoy as opposed to it being a poorly designed game.)
The gameplay isn't bad; it's like a twin-stick shooter, kind of. It actually reminds me a lot of Super Smash TV for the SNES (that probably doesn't mean much to anyone, but my brother and I played that game a lot back in the day. Haha.) It's probably worth a download if you have PS+, or if you want to do local coop with someone.
So, I guess that's sort of my mini review. Haha.