Here is the full list of all 49 Dino Run DX achievements.
2X Dactyl Chain
100 Lizards Eaten
25 Birds Devoured
Found The Little Green Dude
100 Runners Eaten
250 Eggs Saved
25 Worms Slurped
Complete Medium Challenge
10 Birds Devoured
1 Dino Saved
10 Worms Slurped
All Bronze Trophies
All Silver Trophies
All Gold Trophies
All Medium Speedruns
All Hard Speedruns
All Insane Speedruns
Complete Medium Planet D
Complete Hard Planet D
Complete Insane Planet D
Complete Hard Challenge
Complete Insane Challenge
1000 Eggs Saved
2000 Eggs Saved
All Super Eggs Saved
250 Lizards Eaten
500 Lizards Eaten
250 Runners Eaten
500 Runners Eaten
50 Worms Slurped
50 Birds Devoured
25 Fish Eaten
50 Fish Eaten
100 Fish Eaten
5 Dino Saved
10 Dino Saved
25 Dino Saved
50 Dino Saved
3 Second Boulder Ride
6 Second Boulder Ride
10 Second Boulder Ride
3X Dactyl Chain
4X Dactyl Chain
10 Second Doom Surf
60 Second Doom Surf
30 Second Doom Surf
Beat Medium Halloween Hellrun
Beat Hard Halloween Hellrun
Beat Insane Halloween Hellrun