Full list of all 12 Prehistoric Dude achievements worth 1,000 gamerscore. It takes around 0.5-1 hour to unlock all of the achievements on Xbox One.
Defeat the second boss.
Find the Club.
Find the Bamboo Stick.
Open a 100 fruits fence.
Get more health.
Find the Tonic of Fortitude.
Defeat the first boss.
Get more stamina.
Find your first silver key.
Use a lever.
Open your first chest.
Find the Mountaineer Gloves.