ClassicOT doesn't have level doors, to prevent quest abusing by low levels,
Some of the quest chests can be opened only by players that participated / killed a specific creature.
You can see which creatures need to be killed to open certian chests on this page.
| Name | Location | Monster | Amount |
| The Desert Dungeon Quest | Jakundaf Desert | Fire Devil | 1 |
| Medusa Shield Quest | Drefia (Darashia) | Necromancer | 5 |
| Orc Fortress Quest | Orc Fortress | Orc Warlord | 4 |
| Orcs Hideout Quest | Flores | Orc Warlord | 4 |
| Crusader Helmet Quest | Dwarf Mines (Kazordoon) | Giant Spider | 2 |
| Flores Heroes Quest | Flores | Hero | 5 |
| Black Knight Quest | Villa Scapula (Venore) | Black Knight | 1 |
| Fire Axe Quest | Edron Dragon Lair | Dragon Lord | 3 |
| Behemoth Quest | Edron (Cyclopolis) | Behemoth | 4 |
| Vampire Shield Quest | Edron Hero Cave | Warlock | 1 |
| Banshees Quest | Flores | Warlock | 3 |
| Demon Shield Quest | Flores | Demon | 1 |
| Demon Legs Quest | Edron Hero Cave | Demon | 1000 |
| Demon Helmet Quest | Colda | Frost Dragon Lord | 300 |
| Frost Weapons Quest | Colda | Warlocks | 3 |
| Grey Tome Quest | Colda | Frost Dragon Queen | 100 |
| Green Tome Quest | Colda | Baal | 1 |
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