Killroy's Slaughterhouse

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

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 4:10 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.(This means each mob will on average spawn 1.5 more mobs)

Below is the formula for calculating when(in Miliseconds) each of the 300 spawns is occurred after the start of the run

$TimeAfterStart=1000*\left(0.05+0.15*\left(SpawnNumber^{1.3}\right)\right)$

Killroy Prime

Killroy Prime is a list of the most amount of mobs killed inside a killroy's Room.
Unlocked from The Rift, that is located in Hyperion Nebula.

Damage Multiplier For Total Kills

Only Unique Amount Of First Million Total Kills Are Shown
0	1.00x	1	1.01x	6	1.02x	16	1.03x	32	1.04x
56	1.05x	89	1.06x	130	1.07x	182	1.08x	243	1.09x
317	1.10x	402	1.11x	499	1.12x	610	1.13x	734	1.14x
872	1.15x	1,024	1.16x	1,192	1.17x	1,375	1.18x	1,574	1.19x
1,789	1.20x	2,021	1.21x	2,271	1.22x	2,537	1.23x	2,822	1.24x
3,125	1.25x	3,447	1.26x	3,788	1.27x	4,149	1.28x	4,529	1.29x
4,930	1.30x	5,351	1.31x	5,793	1.32x	6,256	1.33x	6,741	1.34x
7,248	1.35x	7,776	1.36x	8,328	1.37x	8,902	1.38x	9,499	1.39x
10,120	1.40x	10,764	1.41x	11,433	1.42x	12,125	1.43x	12,842	1.44x
13,585	1.45x	14,352	1.46x	15,145	1.47x	15,963	1.48x	16,807	1.49x
17,678	1.50x	18,575	1.51x	19,499	1.52x	20,450	1.53x	21,429	1.54x
22,435	1.55x	23,468	1.56x	24,530	1.57x	25,620	1.58x	26,739	1.59x
27,886	1.60x	29,062	1.61x	30,268	1.62x	31,503	1.63x	32,768	1.64x
34,064	1.65x	35,389	1.66x	36,745	1.67x	38,131	1.68x	39,548	1.69x
40,997	1.70x	42,477	1.71x	43,988	1.72x	45,531	1.73x	47,107	1.74x
48,714	1.75x	50,355	1.76x	52,027	1.77x	53,733	1.78x	55,472	1.79x
57,244	1.80x	59,049	1.81x	60,889	1.82x	62,762	1.83x	64,670	1.84x
66,612	1.85x	68,588	1.86x	70,599	1.87x	72,646	1.88x	74,727	1.89x
76,844	1.90x	78,996	1.91x	81,184	1.92x	83,408	1.93x	85,669	1.94x
87,965	1.95x	90,298	1.96x	92,668	1.97x	95,075	1.98x	97,519	1.99x
100 K	2.00x	102.5 K	2.01x	105.1 K	2.02x	107.7 K	2.03x	110.3 K	2.04x
113 K	2.05x	115.7 K	2.06x	118.4 K	2.07x	121.2 K	2.08x	124 K	2.09x
126.9 K	2.10x	129.8 K	2.11x	132.8 K	2.12x	135.7 K	2.13x	138.8 K	2.14x
141.8 K	2.15x	144.9 K	2.16x	148.1 K	2.17x	151.3 K	2.18x	154.5 K	2.19x
157.7 K	2.20x	161.1 K	2.21x	164.4 K	2.22x	167.8 K	2.23x	171.2 K	2.24x
174.7 K	2.25x	178.2 K	2.26x	181.8 K	2.27x	185.4 K	2.28x	189 K	2.29x
192.7 K	2.30x	196.4 K	2.31x	200.2 K	2.32x	204 K	2.33x	207.9 K	2.34x
211.8 K	2.35x	215.7 K	2.36x	219.7 K	2.37x	223.7 K	2.38x	227.8 K	2.39x
231.9 K	2.40x	236.1 K	2.41x	240.3 K	2.42x	244.5 K	2.43x	248.8 K	2.44x
253.2 K	2.45x	257.6 K	2.46x	262 K	2.47x	266.5 K	2.48x	271 K	2.49x
275.6 K	2.50x	280.2 K	2.51x	284.8 K	2.52x	289.6 K	2.53x	294.3 K	2.54x
299.1 K	2.55x	304 K	2.56x	308.9 K	2.57x	313.8 K	2.58x	318.8 K	2.59x
323.8 K	2.60x	328.9 K	2.61x	334 K	2.62x	339.2 K	2.63x	344.4 K	2.64x
349.7 K	2.65x	355 K	2.66x	360.4 K	2.67x	365.8 K	2.68x	371.3 K	2.69x
376.8 K	2.70x	382.4 K	2.71x	388 K	2.72x	393.7 K	2.73x	399.4 K	2.74x
405.1 K	2.75x	410.9 K	2.76x	416.8 K	2.77x	422.7 K	2.78x	428.7 K	2.79x
434.7 K	2.80x	440.8 K	2.81x	446.9 K	2.82x	453 K	2.83x	459.2 K	2.84x
465.5 K	2.85x	471.8 K	2.86x	478.2 K	2.87x	484.6 K	2.88x	491.1 K	2.89x
497.6 K	2.90x	504.2 K	2.91x	510.8 K	2.92x	517.5 K	2.93x	524.2 K	2.94x
531 K	2.95x	537.8 K	2.96x	544.7 K	2.97x	551.6 K	2.98x	558.6 K	2.99x
565.7 K	3.00x	572.8 K	3.01x	579.9 K	3.02x	587.1 K	3.03x	594.4 K	3.04x
601.7 K	3.05x	609.1 K	3.06x	616.5 K	3.07x	624 K	3.08x	631.5 K	3.09x
639.1 K	3.10x	646.7 K	3.11x	654.4 K	3.12x	662.1 K	3.13x	669.9 K	3.14x
677.8 K	3.15x	685.7 K	3.16x	693.7 K	3.17x	701.7 K	3.18x	709.8 K	3.19x
717.9 K	3.20x	726.1 K	3.21x	734.3 K	3.22x	742.6 K	3.23x	751 K	3.24x
759.4 K	3.25x	767.8 K	3.26x	776.4 K	3.27x	784.9 K	3.28x	793.6 K	3.29x
802.3 K	3.30x	811 K	3.31x	819.8 K	3.32x	828.7 K	3.33x	837.6 K	3.34x
846.6 K	3.35x	855.6 K	3.36x	864.7 K	3.37x	873.9 K	3.38x	883.1 K	3.39x
892.3 K	3.40x	901.7 K	3.41x	911 K	3.42x	920.5 K	3.43x	930 K	3.44x
939.5 K	3.45x	949.2 K	3.46x	958.8 K	3.47x	968.6 K	3.48x	978.4 K	3.49x
988.2 K	3.50x	998.1 K	3.51x

Total Kills can be found by visiting The Rift and tap/click on Killroy Prime's Bonus Rockpile.