Killroy's Slaughterhouse
From IdleOn MMO Wiki
Killroy's Slaughterhouse is a weekly challenge accessed from Killroy in the YumYum Grotto where you are given two randomized selections of battle. The random factors are which class can enter and what the enemy will be fought. The map is also random, but that isn't indicated upon the selection options. Killing enemies within these challenges will award the player with "Skulls" which act as a currency for the Skull Shop, also provided by Killroy.
Skull Shop
The Skull Shop offers the following selections:
| Cost | Reward | Notes | ||||||
|---|---|---|---|---|---|---|---|---|
| 5 | Random Time Candy |
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| 9 |  Black Pearl |
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| 10 | File:White Pearl.png White Pearl | |||||||
| 3 | Next Kill Spawns a Crystal | |||||||
| 6 |  Dungeon Loot Dice |
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| 4 | 6 Arcade Balls | Automatically applied. | ||||||
| 8 | 2 Library Books | Automatically applied. | ||||||
| 1 | 1 Free Refinery Cycle | Automatically applied. | ||||||
| 8 | 2  Pet Eggs |
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| 5 | 3  Cooking Ladles |
