Here is the full list of all 76 Robot Roller-Derby Disco Dodgeball achievements.
Achieve Rank 10 in your Mission Badge
Get 100 Multi-KOs
KO the Hoops Ball carrier 250 times
KO the Super Ball carrier 250 times
Catch 250 enemy dodgeballs
KO 1000 bots in Horde Mode
Beat Arcade mode
Achieve Rank 9 in your Mission Badge
Achieve Rank 8 in your Mission Badge
Achieve Rank 7 in your Mission Badge
Win a match with a Godlike KO
Get 250 Dunk KOs
Achieve Rank 6 in your Mission Badge
Get 100 ninja hits
KO an On Fire player while you are On Fire
Score 5000 points in Horde Mode (solo)
KO 25 opponents that are On Fire
KO an On Fire enemy with a Flying Squirrel
KO an On Fire enemy with a Helicopter
KO an On Fire enemy with a Dunk
Be alive at the end of a Team Elimination match 25 times
Catch what would have been the winning Deathmatch KO
Get the winning score in Team Hoops 10 times
Get 10 Hoop Score Assists
Score the most hoops and most KOs in a round of Team Hoops
Get the winning score in Team Super Ball 10 times
Achieve Rank 5 in your Mission Badge
Win 25 matches of Team Score Battle
Get the winning KO in Team Score Battle 10 times
Perform a Godlike KO
Score one of every special KO type
Get 250 Long Distance KOs
Become On Fire with a Flying Squirrel KO
Get the winning score (any mode) after being KO'd
Win a match with a Helicopter KO
KO 100 opponents while On Fire
Get the winning KO in Team Deathmatch 10 times
Score 50 Combo KOs
Score 1000 points in Horde Mode (solo)
Achieve Rank 4 in your Mission Badge
Get 25 KO Assists
Win 5 matches of FFA Super Ball
Win 5 matches of FFA Grand Prix
Score 10 ricochet hoops
Win 5 matches of FFA Hoops
Win 10 matches of FFA Score Battle
Win 10 matches of FFA Deathmatch
KO an On Fire enemy with a Long Distance shot
Perform three Top Gun KOs in a single life
Perform three Duck Hunt KOs in a single life
KO a player, then catch the ball they threw
Catch a ball thrown by an On Fire enemy
Catch an enemy ball that has been mid-air >= 4 seconds
KO the Grand Prix Race leader 25 times
Achieve Rank 3 in your Mission Badge
Return your team's cube 25 times
Capture the enemy cube 100 times
Catch a helicopter shot
KO the Super Ball carrier with 3 or fewer seconds left, then win match
Win 25 matches of Team Deathmatch
Achieve Rank 2 in your Mission Badge
Be the Team Grand Prix Race winning player 10 times
Become On Fire while you are the Grand Prix race leader
Win 10 matches of Team Grand Prix
Win 5 matches of FFA Elimination
Win 10 matches of Team Super Ball
Win 10 matches of Team Capture The Cube
Win 10 matches of Team Hoops
Win 25 matches of Team Elimination
Get the winning KO in Team Elimination 10 times
Achieve Rank 1 in your Mission Badge
KO three enemies in 10 seconds
Get an 8 KO streak
Get a 5 KO streak
KO an enemy with a ball thrown 75 meters or more
Be the last team member alive in Elimination match vs 4+ live enemies and win