Here is the full list of all 18 Nighthaw-X3000 achievements.
Played coop mode.
Completed the story mode on Xtreme mode. You are crazy, seriously.
Died 50 times.
Finished the boss rush.
Unlocked secret mode.
Completed the story mode.
Seventh level completed.
Sixth level completed.
Choose one up instead of new weapon.
Killed 1000 enemies.
When sh... Fifth level completed.
Catch 10 powerups.
Fourth level completed.
Third level completed.
Second level completed.
First level completed.
Choose new kind of weapons.
Unlock secret ending.