Here is the full list of all 41 Ice Age: Dawn Of The Dinosaurs achievements worth 1,000 gamerscore.
Egg Roll Challenge 3 Completed
Rudy's Revenge Challenge Completed
Noisy Nightlife Challenge Completed
Flight of the Pterodactyl Challenge Completed
Saving Sid Challenge Completed
Scrat's Tar Pit Trouble Challenge Completed
Scrat's Jungle Jive Challenge Completed
Nuts About Scratte Challenge Completed
Run Sid Run! Challenge Completed
All 5 sets of Crystals Collected
All Blue Crystals Collected
All Red Crystals Collected
All Amber Crystals Collected
All Purple Crystals Collected
All Cyan Crystals Collected
Completed the Game
Lower World Levels Completed
Skeleton Bridge Completed
Grave Danger Completed
Scrat's Tar Pit Trouble Completed
Rudy's Revenge Completed
Saving Sid Completed
Egg Roll Challenge 2 Completed
Egg Roll Challenge 1 Completed
Flight of the Pterodactyl Completed
Noisy Nightlife Completed
Expect the Unexpected Completed
Scrat's Jungle Jive Completed
The Diego's Challenge Completed
Root of all Evil Completed
Flower Power Completed
Buck to the Rescue Completed
Ice Age levels Completed
Nuts About Scratte Completed
Watched the Credits
Run Sid Run! Completed
Egg Roll Completed
Lonesome Sloth Completed
The Pursuit Completed
Baby Proofing Completed
Sid's Early Start Completed