To those who are having trouble, remember to charge your weapon and shield before going into battle by left clicking on it. What worked for me was the vampiric hammer and upgrading speed. Eventually I got the right combination of stuff to beat the game. At the end I had a hammer that would restore 4 HP with each attack, a shield that added +1 AP, and 6 AP total.
The necromancers were an exception. I took them out with an axe by attacking once and retreating since I didn't have a hammer.
Good game but short. It kept me coming back since I love rougelikes. A minimap would have been great and also a manner of using all keyboard. Pretty much hit space to swap weapons and that would be all you need. Examining stuff would still be to the mouse but that isn't critical. Frustrating, yes. but challenging, fun, and rewarding.
One question. The softly glowing arcane symbols, did they actually do anything? I couldn't tell.