Here is the full list of all 45 Caveman Craig achievements.
Destroy a checkpoint within 15 seconds using fire
Complete the 1st conquest level without buying cavemen
Never return to your cave in a level of conquest
Witness a pterodactyl be crushed by a meteor
Deal a final blow to Jurassic John
Use combined mushroom effects to send an enemy flying
Collect all the pieces of the tablet in the 3rd conquest level
Breed a family of more than 10 pet dinosaurs
Complete the 3rd conquest level
Take down an entire herd of Parasaurolophus'
Deal a final blow to Prehistoric Pete
Complete the 2nd conquest level
Get removed from the enemy territory by an Allosaurus
Kill 150 dinosaurs
Have a preparer learn both tasks before he reaches 30 seconds old
Harvest 50 bushes
Fully teach 30 cavemen
Kill 50 dinosaurs
Complete the 1st conquest level
Kill a caveman while in your own territory by throwing rocks across the border
Have one of your hunters become a veteran in conquest mode
Have one of your preparers become a veteran in conquest mode
Have one of your gatherers become a veteran in conquest mode
Steal a carcass from enemy territory
Complete the 4th conquest level
Complete the 5th and final conquest level
Complete the Game
Deal a final blow to Trojan Joe
Deal a final blow to Sasquatch Steve
Reach stage 4 in the meteor dodge challenge
Reach a score of 6000 or higher in the rock stomp challenge
Find the Walrus!
Fill the red feather bar in the 4th conquest level
Fill the green feather bar in the 4th conquest level
Fill the yellow feather bar in the 4th conquest level
Fill the blue feather bar in the 4th conquest level
Use combined mushroom effects to let the dinosaurs do the killing
Use combined mushroom effects to fight with all you've got
Have, like, 20 cavemen named Derek.
Take down a T-rex within 5 seconds
Create the zombie apocalypse
Convert 3 enemy veteran cavemen
Somehow drag a dead caveman back to your cave
Reach a tribe size of 10 in a custom survival game with hardest dinosaur difficulty (and all dinosaurs enabled)
Win a custom conquest game on the hardest tribe difficulty