Callisto
Late game · Ranged · solo · recommended 100+ combat
This fight is in the Wilderness. Other players can attack you, and you lose items on death. For a Hardcore Ironman, a death here costs Hardcore status.
Why Ironmen kill it
Voidwaker hilt, tyrannical ring and a dragon pickaxe. Multi-combat Wilderness.
Requirements to access
Skills
None
Quests
None
- Wilderness (level 40+); PvP risk
Hardcore Ironman
Wilderness: player-killers too, and a death ends Hardcore status.
Drops worth chasing
| Drop | What it's for | Rate | 90% chance by |
|---|---|---|---|
| Dragon pickaxeGear | Dragon pickaxe Faster mining than rune for the rest of the game. | 1/256 per kill | 589 kills |
| Tyrannical ringUpgrade | Melee accuracy ring. | 1/512 per kill | 1,178 kills |
| Callisto cubPet | The boss pet. | 1/1,500 per kill | 3,453 kills |
“90% chance by” is how many kills (or chests) give a 90% chance of having the drop; most players get it sooner, and some much later. Raid rates are a share of unique drops, which depend on points and team size. See every upgrade in order on the Ironman gear progression page.
Top kill counts
Are you ready?
Look yourself up; the planner lists which bosses your stats and quests unlock.
Other late game bosses
Requirements and drop rates (rates fetched 2026-10-01) checked against the Old School RuneScape Wiki (CC BY-NC-SA 3.0). Requirements are game facts; the descriptions here are our own.