Here is the full list of all 10 Air Forte achievements.
Complete the Adventure
Collect 227 bubbles.
Complete Infinite level 5.
Complete Challenge with two or more players.
Complete any level with four players.
Complete a practice session at the highest difficulty.
Complete Challenge under 60 seconds.
Collect 1000 bubbles.
Complete Infinite level 10.
Reach Infinite level 4 with four players.