Here is the full list of all 22 Final Directive achievements.
Score an S rank
Score an A rank
Score a B rank
Score a C rank
Finish the first stage
Finish the second stage
Finish the third stage
Finish the fourth stage
Make it back down
"Okay, campers, rise and shine."
Defeat the door boss
Escape the space-centipede
Get a multiplier of 50x
Get a multiplier of 100x
Get a multiplier of 250x
Get a multiplier of 400x
Get a multiplier of 600x