Killroy's Slaughterhouse

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Killroy's Slaughterhouse is a weekly challenge accessed from Killroy in the YumYum Grotto.
In which you are given three randomized selections of rooms (the 2nd selection room unlocks after reaching World 4 and the 3rd unlocks after unlocking it from the Skull Shop).
The random factors are:

• Which class can enter
• What enemy will you be fighting, the map is the same as the mob's spawning area.
  

Killing enemies within these challenges will award the player with  Skulls which act as a currency for the Skull Shop, also provided by Killroy. When the challenge resets(weekly) your Skulls will also be reset.

Rooms can be reset using Airhorn for 400 .

Skull Shop

The Skull Shop offers the following selections:

Shop Offers
After unlocking Killroy Prime from The Rift you will have access to these 5 additional upgrades
1% Chance to permanently unlock the 3rd Killroy Weekly Fight! 4	Permanently boosts Artifact Find Chance! 9	Adds 1 nugget to your Shovel in Gaming, go dig it up! 5	Permanently boosts Crop Evolution Chance! 6	Permanently boosts Jade Gain! 7
Get a random time candy! Pick it up off the floor. 5	Get a black pearl, gives Skill EXP! Pick it up off the floor. 9	Get a white pearl, gives Class EXP! Pick it up off the floor. 10	Your next kill spawns 1 Crystal Mob! Expires at end of day! 3	Get a Dungeon Loot Dice! Pick it up off the floor. 6
Get 6 Balls! They're put right into the arcade! 4	Get 2 Library Checkouts! It's put right into the library! 8	Complete 1 Refinery Cycle automatically, right here right now! 1	Get 2 Pet Eggs! Pick them up off the floor. 8	Get 3 Kitchen Ladles! Pick them up off the floor. 5

Room Upgrades

After time's up in any battle you'll be granted to choose one of the six "Upgrades" which are permanent for all future runs that boosts your progress/rewards within room:

Upgrade	Description
+1 Second Timer	Increases your maximum time in room. Base time is 100 seconds.
+ Talent Drops	Increases the chance for Talent Point drop, depends on how many Talent Point drops already got
+1% Bonus Skulls	Increases the chance of dropping skulls by mobs(Caps at lvl 900)
Faster Respawn	Increases the chance to spawn more mobs everytime a killroy Mob spawns.
Dungeon Drops	Mobs can drop Dungeon Credits now
Pearl Drops	Mobs can drop Pearls now (Amount of pearls dropped scales off the level of Dungeon Drops)

Mob Spawn

In Killroy Battles theres 3 Ways Mobs spawn:

• The "Normal Mobs", the mobs that are on the map regulary.
  • Respawn Abilities work on them.
• The "Killroy Mobs" that spawn, Stops after 300 Spawns(300th spawn happens after around 4:09 Minutes).
  • Leveling the "Faster Respawn" will give a +1% to spawn more monsters in each of the 300 spawns
  • Respawn Abilities do not work on them.
• There is a 60% to spawn another Mob when killing any Mob.