Play on each map in the game at least once
Take the lead during the final countdown of a Timed Battle match
Cross the street in Garden without looking both ways
Flood the bottom floor of the Aquarium
Get a triple kill with the Gun Power-Up
Fall through the hinged door in Attic
Finish a Clean of the Hill match with a really high score (at least 2000)
Win a match against 3 CPUs set to Hard difficulty
Get a triple kill with the Mallet Power-Up
Pop 10 fake Power-Up balloons in a single match
Unlock all cosmetic items
Bounce a bullet off of two surfaces before it hits its target
Get a triple kill with the Dust Vortex Power-Up
Win a Timed Battle match without getting killed
Complete a Clean of the Hill match with a score of 800; no more, no less
Pop another player's balloon while they have the Gun Power-Up
Win a Clean of the Hill match without ever falling below first place
Pop another player's balloon right before they make a large dust deposit
Leave an explosive surprise at another player's docking station
Pop another player's balloon right after they spawn
Push another player into an active stovetop in Island
Play 10 games
Play 100 games
Destroy 100 Broombots
Destroy 1000 Broombots
Deposit 10,000 dust
Deposit 100,000 dust
Activate 100 Power-Ups
Access the test map
Unlock everything the easy way
Play a game of Pool in the Basement
Do some golfing in the Bathroom