OMEGA Boss Rush

Omega Boss Rush is a secret event, triggered by clicking on the ??? sign in Grillbys repeatedly. Omega Boss Rush costs 1,000,000 XP to queue, and has a cooldown when beaten.

When you spawn into the mode, Server will begin to monologue, before turning all players into the Soldier class before the waves start.

Wave Structure
WAVE 1: Big Shambler x10

WAVE 2: Omega Death nacker, Enraged nacker x2

WAVE 3: Expired Jack, King Midas, Chaos

WAVE 4: Eye of Azurewrath

WAVE 5: Rex, Ruler of the Universe, Lux, Slave of Light, Greed

WAVE 6: Void, Special Void

WAVE 7: The Amalgamation, The Abomination

WAVE 8: Azurewrath, Lord of the Void!

(SECRET, LOW CHANCE AFTER WAVE 7) WAVE 9 : Crimsonwrath, Lord of Entropy!

Ways to defeat Omega boss rush
You should try to defeat omega boss rush without an exploiter, its possible but will take a long time. Also if you any hackers be sure to report them.

The reward is 250k XP and any of the following classes that you haven't unlocked. Attorney, Time Jumper, Recon, Golden commando , OMEGA death skin, and Soldier.

Tips
Stay at the back and shoot the enemies as they come.

Getting good at the game will be a big help, as it make thewaves go by much faster!

Don't keep Eye of Azurewrath/Omega Death nacker on one person for too long!

Trivia
There used to be a theory that in order to spawn Crimsonwrath, you had to beat wave 7 when the time remaining was 17:45. This was proven to be false.