>If possible, don't rest to heal, just walk around. That way your endurance won't go up too quickly and the enemies will remain easy
strange enough, i like to eat some spiders and then rest. and then don't rest to heal before it will be critical.
btw: don't eat snakes; usually you can survive after eating a spider, but you cartainly don't survive after eating a snake.
then, if you found a pickaxe, go to the secret level as soon, as you can, so it will be filled with weaker monsters. don't explore it! just in and out. you'll return there later.
if you got wand of teleportation, you are lucky: you can teleport Jenny away and beat UT.
remember, there is a healer in the New Attnam! she even can attach your bodyparts back (if you bring that bodypart to her).
don't even try to go to the Enner Beast without SoDM, WoT and WoF/WoL. it doesn't matter how cool you are -- you'll probably die.
hope i don't spoiled too much (it's well known things after all). feel free to edit my post if i am.
p.s. i'm playing IVAN 3 or 4 years now, and i never beat the game. and i don't believe thouse who tells they are. %-)