Playing Angband - can be frustrating as you run into 'no win' type situations (or hard anyway) early in the game sometimes. For example, something set off an alarm so all the monsters came at me from the level; low on health after casting recall, I tried a potion for HP, and it was poison, that was that even though I got back to town, HP was going down.
Trying as a gnome mage. Bit tricky as you use up the available spells and there are more monsters.
I liked the 'identifies magical devices' attribute but haven't found any yet.