Thief

Hide Levels

Kesmai
Surface Level: 4-15 (8?)
Kesmai -1: 4
Kesmai -2: 4-15 (8?)
Kesmai -3: 15
Kesmai -4: 19 (20?)
Trog Lair: 4-19
Ydnac Lair: 23
Daisy Lair: 20

Axe
Surface Level: 4-22
Axe Glacier (60): 23-25
King Wolf: 23-25
Griffin Ledge (80): 23-25
Ogre Caves (120): 23-25
Chaos Town (180): 23-25
Giant Castle (60 and 80): 23-25
Giant: 23-25
Axe Glacier (230): 23-25
Drake Lair (360): 26
Mama Lair (390): 30
Yeti Lair (450): 28

Oak
Surface: 4-25
Doom.Orc: 4-25
Spider Level: 4-25
Hobs Level: 4-25
Eastern Ledge: 4-25
Wyrms Level: 4-25
Serpent Level: 25
Troll Temple: 26-28 (probably 26)
Undead (Oak): 27-28 (probably 28)
Lich Twins: 22-28 (probably 28)

Leng
Surface Level: 4-25
Centaur Ledge (-50): 4-30
Rubble Cliff (-50): 4-30
Lava Ledge (-100): 4-30
Power Troll (-200): 4-30
Mausoleum (100): 4-25
Vlad: 26-30 (Probably 30)
Griffin Level (200): 25-27 (Probably 25)
Kosh: 25
Shidosha: 4-30 (26?)
Undead/Green Floor Dungeon (180): 26-30
Ianta Level (350): 26
Minotaur’s Lair (390): 25-28
Leng Drake (430): 28

UK
Surface Level: 4-25 (drake 28?)
Orc Cavern (-50): 4-25
Lightning Caves (-80): 26-27
Speedy Hobs (-100): 28
Goblin Jungle (-100): 25-28 (probably 28)
Yasnaki (-200): 30
Shelob/Carfel: 30
Googoog's Jungle (-200): 25-28 (probably 28)
Connecting Level (-280): 25-30 (probably 30)
Undead (UK) (-300): 30
Courtyard (-300): 29-30 (probably 30)
Troll King: 30
Crypt (-350): 25-30 (probably 30)