Here is the full list of all 22 Funklift achievements.
Play 30 games.
Play 50 games.
Play 100 games.
Score 5000 points in a single game.
Score 10 000 points in a single game.
Score 20 000 points in a single game.
Score 25 000 points in a single game.
Stack 5 items.
Stack 10 items.
Stack 15 items.
Deliver a shelf.
Deliver 10 shelves.
Score 3000 points in one drop off.
Score 5000 points in one drop off.
Score 10 000 points in one drop off.
Deliver a bonus-toaster in 4-player cooperative play.
Deliver 5 bonus-toasters in a single game.
Fall into the chute 10 times in a single game.
Deliver an item within 16 seconds.
Drop another player in the chute.
Score by driving into the chute.
Build two towers each containing 15 stacked items.