Yes, the visual style is great. Yes, it's nice to see an old-school turn-based dungeon crawler being made. Yes, it's really impressive that it's pretty much all the work of one guy. Mad props to him.
But none of that changes the fact that Paper Sorcerer is a glitchy mess with serious balance issues. That these glitches and balance issues remain after the game has been out for so long is surprising. There are many game-crashing bugs - seriously, if you ignore this review, save often - especially before you try to leave your room in the game's town area, as there's a glitch there that will randomly crash the game. And the first three bosses will kill you, while the rest will meekly let you by - one of them will literally refuse to fight you.
What really killed the game for me, though, and what prompted me to write this review, is that there's this neat minigame within the game where you're solving puzzles and opening secret doors throughout the dungeon, in anticipation of a big payoff near the end of the game. That payoff, the thing you put in the extra hours for, the thing you put your characters at risk for, is glitched, such that when you finally get to the end, you can't get it. When you get to the final set of doors that the big reward lies beyond, the game forgets you have the key to those doors. You get nothing - no in-game reward, no achievement, nothing. From perusing the forums, this is a huge bug that has been around for a long time, and which the developer has refused to fix.
Glitchy, unbalanced, plays all of its neat tricks right up front, wears out its welcome. I'm disappointed.