Use your first ability.
Reach level 1.
Play a weekly challenge.
Survive your first wave.
Choose your first upgrade.
Change your equipment for the first time.
Use each of ViKing 2000's abilities at least once.
1,000 opponents have corrupted the core.
Reach level 45.
Reach wave 100.
Unlock all weapons.
Unlock your first weapon.
Unlock your first ability.
Unlock all abilities.
Defeat the infected Triforce.
Defeat the Brute.
Defeat the Launcher.
Defeat the Monolith.
Defeat the Spine Dragon.
Defeat the Jammer.
Defeat the Laser Fiend.
Defeat the Trashmaster.
Defeat the Megashield.
Defeat the Modulator.
Reach wave 50.
Reach the Virus Zone.
Activate all 4 abilities within one wave.
Reach wave 50 with a mutator.
Reach wave 50 with 4 mutators.
Combine the laser upgrade with the missile split upgrade.
Combine the Arc Emitter's piercing shot with explosive hits.
Upgrade your Gatling cannon to a smartgun that keeps its projectiles alive.
Release a cannon projectile to bounce between 20 opponents.
Connect 10 opponents simultaneously with the laser.
Equip a different weapon in each slot and reach at least wave 50.
Equip the same weapon 5 times and reach at least wave 50.
Defeat a scarecrow.
Defeat every opponent with every weapon and every status effect at least once.
Beat wave 100 in the Virus Zone.
Improve your tower rotation at least 4x in one run.
Try interacting with at least 10 system observers.