Full list of all 45 Crimson Dragon achievements worth 1,500 gamerscore. It takes around 25-30 hours to unlock all of the achievements in the base game.
The base game contains 33 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 12 achievements worth 500 Gamerscore.
Completed all story missions on Classic difficulty
Completed all story missions on Casual or Classic difficulty
Achieved player level 20
Collected 500 beacons
Completed all missions for Forest, Ancient Ruins, and Lava Lake on any difficulty
Defeated 3 enemy bosses
Completed all missions for Coral Lake East, Coral Lake West and Underground Lake on any difficulty
Achieved player level 10
Purchased 3 dragons from the shop
Killed 2000 enemy creatures
Collected 18 different Antibodies from creatures on Draco
Fired 3000 tracking missiles
Evolved your first dragon
Used 10 Ampoules
Achieved player level 5
Purchased 1 Item Pack using credits or Jewels
Killed 200 enemies using only your dragon's secondary skill
Killed 500 enemy creatures
Used a Regenerator to revive your dragon during a mission
Unlocked a new skill by feeding your dragon
Looted 1 rare item and 25 common items
Killed 200 enemies using only your dragon's main skill
Scored an "A" rank during a mission in Classic mode
Earned a mission medal playing on any difficulty
Used 1 Ampoule during a mission
Scored "C" rank or higher on a mission in any difficulty mode
Started your first mission with Icarus Division
Killed 50 enemy creatures
Performed a barrel roll by leaning left or right
Activate your wingman dragon communicator and issue a voice command
Use voice commands to navigate to the Shop, Inventory, and Dragon Roost
Acquire all medals for every story mission in the game
Achieve player level 40
Multiplayer: Clear mission 25 times.
Multiplayer: Complete 1 multiplayer mission
Multiplayer: Complete 5 multiplayer missions
Multiplayer: Defeat the White Phantom 3 times
Multiplayer: Complete all multiplayer missions on any difficulty
Multiplayer: Score "S" rank 3 times
Used 25 regenerators to revive your dragon during missions
Achieve player level 50
Collect over 2,000,000 in credits in your account
Kill 10000 enemy creatures
Defeat bosses 10 times in "S" rank.
Use 100 ampoules