Here is the full list of all 29 Jetpack achievements.
The base game contains 28 achievements, and there is 1 DLC pack containing 1 achievements.
Level 1
Play Newschool Mode
First Aliens encounter
Play Oldschool Mode
Welcome to JETPACK!
First Co-op game
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8
Level 9
Level 10
Level 11
Level 12
Level 13
Level 14
Level 15
Level 16
Level 17
Level 18
First Jetpack Refuel
Complete all Levels on Normal
Complete all Levels on Hard
Complete all Levels on Insane
Use All Weapons
Save all Colonist on Earth