
Unlock all 48 achievements in Killer Klowns from Outer Space: The Game with this complete achievement guide for human and Klown players.
Killer Klowns from Outer Space: The Game offers players the chance to earn a total of 48 achievements worth 1,000 gamerscore. This guide lists all the achievements and how to unlock them.

| Achievement Name | Description | Gamerscore |
| The Klowns Have Landed! | Play your first match | 20 |
| Humanity Shall Thrive! | Win 10 matches as a Human | 20 |
| The Lackeys are Lacking | Kill 30 Lackeys | 20 |
| Boomstick Bamboozle | Kill a Klown with a shotgun | 10 |
| Strike! | Hit a Klown on the nose with a thrown baseball | 10 |
| Close Shave | Escape the invasion as the Klownpocalypse explosion is expanding | 10 |
| Not Your Normal Mixtape | Find your first lore tape | 10 |
| A Sweet Escape | Escape the map with the help of the Terenzi Brothers | 10 |
| Escape Artist | Escape invasions 25 Times | 20 |
| Cutting it Close | Free another human from a cocoon that is hooked to a Lackey Generator | 10 |
| Hand of Fate | Gift another player an item as a spectator | 10 |
| I’ve Got Your back | As a human, knock a Lackey off of another human | 10 |
| Ride or Die | Escape with another human in the same boat | 10 |
| Selfless | Open the portal and allow 3 humans to escape in the same match | 20 |
| Clutch Performance | Be the last human alive and trigger the resurrection machine | 10 |
| Quit Lyin’ Around! | Free 3 humans from cocoons in a single match | 20 |
| Sweet Release | Escape from a cocoon twice in a single match | 20 |
| Hi!…Bye! | Escape the invasion after being resurrected | 10 |
| Dress to Impress | Equip one unlockable cosmetic for your human | 10 |
| The Invasion’s Just Getting Started | Reach level 15 | 20 |
| I’m Not Klownin’ Around! | Kill your first klown | 10 |
| Easy In. Easy Out. | Escape a map in under 5 minutes | 10 |
| Klowntastrophic | Win 10 matches as a Klown | 20 |
| Karnival Chic | Equip an unlocked cosmetic to your Klown | 10 |
| Karnival Champion | Reach level 50 | 30 |
| Round ’em Up | Create 3 Human Cocoons in a single match | 20 |
| Kill ’em With Klownness | Trigger Klownpocalypse Early | 20 |
| Sweet Revenge | Kill the human that previously popped your nose | 10 |
| Thrill of the Kill | Kill 100 humans | 30 |
| Savin’ em for Later | Hook up 20 Cocoons to Lackey Generators | 20 |
| Klown Supreme | Get a “Perfect Klown Victory” | 50 |
| Humanity’s Finest | Get a “Perfect Human Victory” | 50 |
| Drop the Bag-, er…Cocoon! | Shoot a Klown carrying a cocoon with a firearm | 10 |
| Peekaboo! | Find a human in a hiding spot | 10 |
| The Operator | Reach Level 100 | 100 |
| Like a Ghost in the Wind | Escape the invasion without taking any damage and without getting cocooned | 30 |
| Killer Klown of Doom | As a Klown, get a Victory without getting killed | 30 |
| Early Bird | Be the first Klown to hook up a cocoon in the match | 10 |
| Tag Team | Attack a human that is being grabbed by a lackey | 10 |
| Cocoon Hauler | Fully upgrade a Lackey generator by yourself | 20 |
| Killer Klowntality | Perform a Klowntality on a downed human | 10 |
| Sticky Protection | Fully cover a Human escape interaction with cotton candy | 20 |
| Nice Try! | Kill or cocoon a human nearby an open escape | 10 |
| Intruder | Break down a locked door | 10 |
| Silica Slayer | As a Klown, smash 30 windows | 20 |
| Popcorn Tracker | Kill a human that is covered in popcorn | 10 |
| What’re Ya Gonna Do? | As a Brawler, Knock a Human’s block off using the boxing gloves | 10 |
| Hurler | Hit a human with a thrown cocoon | 10 |
By following this achievement guide, players can work towards unlocking all 48 achievements and earning the full 1,000 gamerscore in Killer Klowns from Outer Space: The Game.
The game offers a variety of challenges for both human and Klown players, encouraging teamwork, strategy, and quick thinking to emerge victorious in the battle between humans and Klowns.