I figured I should offer a few feature suggestions, separately from my bug reports.
My main suggestion is to add more information for the player. For example using "m" when looking at a monster for "more info" only tells me how many I've ever killed and how many killed me. It would be neat if after a certain number of kills or trying certain things it would add more info. For example killing a thousand zombies gives you their movement speed or ten thousand gives you their damage ranges or max hp etc. Or you could have the damage type that caused a critical hit for double damage to be listed there. Like how skeletons are vulnerable to silver weapons.
Speaking of which. I'd appreciate it of there was more information available on what exactly a modifer does. Like what's the difference between a dark cloth tunic or a bronze breastplate of the moon besides the def stats. (I'd also be nice if the armor your class can't equip mentioned that before I spend all my money on armor I can't use)
For my third suggestion there's several other minor things that aren't clear and could use more information. Like does anything modify maximum O² besides class choice? Why do all classes get def boosts on level up occasionally, yet only the beastman class actually lists that bonus on the character sheet? Does that mean the other classes don't actually benefit from level based defense boosts? What's the difference between the power to turn into a bat or an giant bat? It'd be really helpful to learn how skills move the player. Like some abilities can move you up a level without needing a step to get up. Some can jump gaps. Some can work through walls. But there's no way to know without a lot of trial and error, which skills move you in what way and what attacks work through walls or pierce enemies.
Oh while I'm thinking about it. Is the teleport spell supposed to be impossible to use when on higher elevations like stairs in town?
My fourth suggestion is the kind of silly suggestion you'd expect from random people on the Internet. I'd like to sell items. I know the game really isn't built for that, but I figure if it's something as simple as a tile in town that converts items to a $5 or $50 collectable when placed there that might be small enough not to break things.