Full list of all 15 Ancients of Ooga achievements worth 250 gamerscore. It takes around 8-10 hours to unlock all of the achievements in the base game.
The base game contains 12 achievements worth 200 Gamerscore, and there is 1 DLC pack containing 3 achievements worth 50 Gamerscore.
Kick the Boolis out of Ooga.
Collect all of the bones of the Ancient One.
Make a feast for the flappers.
Transform a Booli using the Animal Chief, Ali-mali.
Shatter a Booli into pieces using the Stone Chief, Te-tera.
Complete 22 levels without dying.
Get the stinkers off slugs.
Completely flood a level using the Swimmer Chief, Fini-ni.
Use the Harvest Chief, Diggi-dodo's power on a Booli.
Swallow 15 unique items.
Complete a split screen cooperative level.
Revive the Fire Chief, Berni-ni.
Get the Glow Stone. (DLC)
Kill the baddest tuska in all the land. (DLC)
Open the crate to discover the contents. You monster. (DLC)