Here is the full list of all 22 Avalanche 2: Super Avalanche achievements.
Beat Mama Squid and a Sky Rider
Get a max-level Whirly follower in Endless Mode
Beat Chicken Commander
Get a max-level Speedster follower in Endless Mode
Complete 15 missions
Beat any boss at the end of the clouds (600ft)
Bank a total of 1,000 coins
Beat Big Mouth and Queen Birdie
Fall in the lava 3 times
Beat any boss at the end of the cliffs (225ft)
Bank a total of 100 coins
Beat the Great Wizard Ohe
Defeat both bosses in any double boss battle!
Defeat every boss in the game
Fall in the laval 50 times
Surf 22 falling blocks without touching the ground
Get a max-level Hopster follower in Endless Mode
Use the climbing gloves 15 times
Complete 45 missions
Kill 50 Dragons
That's impossible. There's no way his height is over 3000ft!
Bank a total of 10,000 coins