Here is the full list of all 11 Xenture achievements.
First time open the game
Win One Game
Finish the game under 15 minutes
Beat the game in under 10 minutes
Kill 5 enemies with one explosion
Kill 10 enemies with one explosion
Stay in the air for at least 30 seconds (whether jetpacking or just falling, as long as you don't touch the ground for that long)
Reach the highest point in the game
Reach Level 100
Kill at least 10 of each enemy type
Drown in water