Here is the full list of all 20 Survival: Fountain of Youth Playtest achievements.
Faint 10 times
Catch a fish
Build a Cart for transporting
Build a Chemistry Workbench
Build a Kiln
Build a Water Collector
Spend 10 hours in game
Craft a bow
Find an Obsidian Shard
Kill a Jackal
Find a Сlay Piece
Faint for the first time
Find a Sea Resources
Kill a Boar
Unlock 50 recipes
Spend 2 hours in game
Kill a Turtle
Craft a Spear
Unlock 20 recipes
Survive the shipwreck