Here is the full list of all 30 Space Elite Force achievements.
destroy battle cruiser
destroy heavy destroyer
reach the maximum level!
destroy heavy cruiser
get 20x combo!
destroy heavy frigate
collect super gun power
improve the life of the ship!
improve ship shield
Destroy Destroyer
Kill 300 enemies!
collect double orbs power
collect shield power
Desttroy Cruiser
Kill 200 enemies!
someone sent a car into space, destroy it!
improve the ship resistance!
Destroy Frigate
collect magnetic power
get 10x combo!
Kill 50 enemies!
collect double score power
complete the hardcore mode!
1st in rank (infinite mode)
Complete a mission without suffering damage!