Here is the full list of all 31 Pummel Party achievements.
Hit three players with the remote control eggplant
Survive in 'Breaking Blocks' for 60 seconds
Place first in every minigame
As the lightning holder kill every other player in 'Thunderous Trench'
Complete 'Rusty Racers' without falling off the track
Take no damage in 'Searing Spotlights' minigame
Win 'Magma & Mages' without taking damage
Score over 5 in 'Bouncing Balls'
Place last in every minigame
Skewer three players with the rocket skewer item
Find the treasure in 'Sandy Search'
Got hit by the train in 'Temporal Trails'
Get launched off screen in 'Tunneling Tanks'
Knock off 5 players in one game of 'Snowy Spin'
Died in 'Acidic Atoll' throwing a barrel
Knockout 10 players in one game of 'Explosive Exchange'
Get a double kill in 'Barn Brawl'
Survive for 50 seconds in 'Bullet Barrage'
Collect 40 keys in 'Winter Maze'
Accidentally blew yourself up in the 'Strategic Shockwave' minigame
Get a 5 player kill sreak in 'Speedy Sabers'
Control over 50% of the area in 'Elemental Escalation'
Complete 'Gift Grab' without collecting coal
Steal the last gift in a players pile in 'Grifting Gifts'
Win your first game
Complete 'Slippery Sprint' without falling in the water
Get your first goal
Win your first minigame
Survive for at least 50 seconds in 'Sorcerers Sprint'
Start your first game