Here is the full list of all 30 Space Elite Force achievements.
get 10x combo!
Kill 300 enemies!
Kill 200 enemies!
collect super gun power
collect double orbs power
collect magnetic power
Kill 50 enemies!
collect double score power
Destroy Frigate
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)
Complete a mission without suffering damage!
someone sent a car into space, destroy it!
collect shield power