The wineskin can be filled with 5 charges from any healing fountain (or well), acting like 5 potions.Enemies can't attack through doors, even with ranged attacks.This builds up your weapon skill for the active weapon, strength, agility and health. Hit everything you can - enemies, furniture, bone piles etc.Pulling it opens a corridor with another secret switch in it - which reveals an alcove with the Dagger of Penetration within. On your left is a brick in the wall you can open to reveal a switch. Turn around, and go forward, left, forward, left, forward. Pulling a lever next to the door that leads to the stairs down opens it - now pull the lever up and down again. On the very first floor, there's a highly overpowered hidden dagger that trivializes combat in the first few levels.Anyways, this might be useful for anyone who decides to try this game for the first time: Unfortunately, I don't actually have this game on steam, so I can't post a proper guide in the section (thanks for leaving me to figure this out via googling / trial and error, Gaben).

Stonekeep for apple instal