Novastrike
16 Achievements
PS3
Perfectionist
Defeat the game on any difficulty without failing any objectives Details for this achievement will be revealed once unlocked
9.6%
How to unlock the Perfectionist achievement in Novastrike - Definitive Guide
You might as well try this on the easiest difficulty since you can't miss anything throughout the entire game. If you fail an objective by mistake, just pause and restart the mission. At least it's not the whole game.