Here is the full list of all 26 Stikbold! A Dodgeball Adventure achievements.
Win a round without picking up the ball
Unlock all playable characters
Play a team-match with 4 characters on one team
Win a 2V2 team match against 2 hardest A.I.’s
Ram the hot dog cart with a floor waxer
Complete Finally Finals on Professional (or higher) difficulty
Complete Finally Finals on All Star difficulty
Unlock all the daisies in Blind Redemption and complete the level
Unlock all the daisies in Finally Finals and complete the level
Complete Finally Finals on Casual (or higher) difficulty
Unlock all the daisies in Something's Cooking and complete the level
Unlock all the daisies in Unexpected Reunion and complete the level
Unlock all the daisies in Lord of Darkness and complete the level
Unlock all the daisies in Whale Sign and complete the level
Unlock all the daisies in Beached Bikers and complete the level
Unlock all the daisies in A Sweet Ride and complete the level
Unlock all the daisies in A Shady Fellowship and complete the level
Unlock all the daisies in Legend, Schmegend! and complete the level
Unlock all the daisies in Warming Up and complete the level
Play a match with custom rules
Use a stalagmite to launch a player
Catch a swan with the fishing rod
Reel a player in front of the van with the fishing rod
Start a match on every level
Catch 100 incoming shots
Get 20 lucky stingers