The The Final Chapter Title update for Raft has 14 achievements.
Unlock all playable characters.
Find all notes in Temperance.
Drive a snowmobile into the sea.
Locate all Grabber caches on Varuna Point.
Find all notes in Varuna Point.
Kill 1 Anglerfish.
Have all buffs from meal and drinks active on you at once.
Reach tier 2 in the trading post.
Purchase an item at a trading post.
Kill 10 Anglerfish.
Kill 50 Anglerfish.
Reach tier 3 in the trading post.