Really good game
The only part that sucked was the "action Points" chipping away at your health when you hit zero. that, combined with the lack of extra lives/ full health restore at the start of each level made you basically screwed if you took a while to solve a simple puzzle, as even the smallest monster could wipe the floor with your corpse on the next level. I would suggest either a lives system (3 or 5 or so until you get a game over), restore part of the health at the end of each level, allow you to continue/heal somewhat at the cost of points, or simply put more health potions in the levels. Finally, I would strongly suggest that instead of tying it to your health, you should instead make the action points a point multiplier, and so the more time you take the less of a score you get. Other than that, fun concept, and hope to see a sequel!