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