Once your really REALLY used to Ivan you avoid most of the stupid deaths and even some of the non-stupid but non-the-less annoying deaths (such as traps)
However Ivan isn't as simple as it may seem. Once you get the hang of it and you can advance through the game consistently it throws you several curve balls. In fact everything earlier can be considered the "Easy" part.
Anyhow here are my tips:
1) If you find a firesword keep it in your inventory even if you don't plan on using it. It is basically an unbreakable lamp (well it can break... it just still works afterwords)
2) Keep Firewands in a box or just don't carry them around.
3) If an item increases your health total, do not have it equipped when you advance a level due to a bug (The game thinks your much stronger then you should be).
4) If you see a floating eye, just Vomit on it. Honestly it is the BEST way to kill it (In fact early on your vomit can clear walls).
5) Wishes should be used for Belt of Levitation or Amulet of Lifesaving (I THINK you can't use it for artifacts)
6) Troll blood is vital as it is the only way to regenerate bodyparts outside of divine intervention.
7) Hedgehogs are perfectly safe to eat. Goblins are safe but Kobolds are not.
For some reason my bodyparts decided to drop off one by one
- Thought it would be a good idea to 'use' a gunpowder keg.. I thought I could use it then throw it into the giant plants mouth to kill it.. Plus the fact I was carrying a few different wands.
- Ate a mushroom and could levitate. Levitated to an island and the effect stopped. Had to quit that character because I couldn't find any way off.
- Various animals getting lucky criticals
1) You contacted Leprosy. You get it from Zombies and it causes your bodyparts to just fall off. It pretty much ends the game (Think of it as an instant kill disease you can get at the start of the game)
2) Throw it man... (Generally speaking do NOT carry around explosives that arn't in protective cases)
3) Mushrooms give different effects depending on their gas and yes you can even avoid the first dungeon altogether if you play your cards right.
4) You mean the Hedgehog. It doesn't critical it does damage to you when you hit it. It isn't a lot but a starting character with no equipment is totally overpowered by it.
As for the best IVAN mod...
If I remember correctly it is LIVAN