Here is the full list of all 30 Super Raft Boat Together achievements.
Do a run.
Unlock Helveti’s machine gun.
Unlock Chauncy’s slugger.
Unlock Roboto’s laser sniper.
Unlock Beta’s rocket launcher.
Unlock Helveti’s alternate costume.
Unlock Chauncy’s alternate costume.
Unlock Roboto's alternate costume.
Unlock Beta's alternate costume.
Defeat the Super Kraken.
Loop the game.
Loop twice in a single run.
Loop three times in a single run.
Do the daily.
Finish Clear Skies without losing a raft and without taking damage.
Get 100 lifetime kills.
Get 1000 lifetime kills.
Get 3000 lifetime kills.
Kill 300 enemies in a single run.
Build 100 lifetime rafts.
Build 1000 lifetime rafts.
Build 3000 lifetime rafts.
Build 200 rafts in a single run.
Spend $1000 in a single run.
Lose 100 rafts in a single run.
Deliver a sailor to their destination.
Rescue 5 egg animals.
Play 10 runs.
Play 50 runs.
Get 20 trinkets in a single run.