Call of Duty: Advanced Warfare
90 Achievements
2,000
59-75h
SP Prestige
Complete the campaign on Veteran difficulty.
75
2.18%
How to unlock the SP Prestige achievement in Call of Duty: Advanced Warfare - Definitive Guide
The reason I say two play throughs is because by the time you beat the campaign on recruit you will A) know what to do and where to go and B) you will have your exo suit nearly maxed out. Just go to mission select, choose the first mission on veteran and begin.
I recommend (on your recruit play through) to get fast reload, more health, and more grenades upgraded as soon as possible, as they will make it so much easier to get it done.
Long story short, if you beat all of the missions and you don't get the achievement right away, just wait. It'll unlock eventually.
*EDIT*
Look at the comments of this solution if you have trouble getting it.
WARNING: There is a glitch that can cause your campaign progress to reset on you when you exit the game. There have only been a few reports of this happening so it isn't widespread, but it can happen. The glitch causes your player profile save to reset (this includes upgrades, intel and campaign progress). The cause of this glitch is unknown and we will update as we know more. To be safe, whenever you start the next mission save and quit, then back your save up. For more info, refer to the thread below:
WARNING! Campaign Progress Loss Possibility
To earn this trophy, you must complete the game on Veteran difficulty. Veteran is the hardest difficulty setting, and is unlocked at default, so you can play it immediately from the start. The difficulty is quite easy compared to previous Call of Duty titles. There's not as many enemies thrown at you unlike previous titles, and you have an exo suit throughout most levels that gives you a clear advantage. The Smart and Threat grenades are also very useful.
Advanced Warfare also introduces a new feature: Exo Upgrade System. This new feature lets you upgrade your exo suit by spending upgrade points earned by completing challenges, including max health. It's highly recommended that you collect all 45 pieces of Intel as well as complete the final challenge for total grenade kills in this playthrough. You can complete the final challenge for grenade kills as early as the second level, "Atlas" in the grenade training exercise. Keep replaying the training course and spam the button (PS3)/ button (PS4) because you have unlimited grenades. Completing all grenade kills challenges will also give you 8 upgrade points. This is extremely useful because you'll have major upgrades early on in the game. As for using your upgrade points, we highly recommend to use them on Reload, Quick Arm, and Armor as soon as you can.
- Upgrade your exo as early as possible, it does help - Getting upgrade points early on in the game help drastically. As mentioned above in the second paragraph of this trophy description, you can complete the final grenade challenge in the second mission.
- Move around, just don't rush - Don't just sit in an area expecting to make progress. Try to push forward as much as you can as your team mates push forward as well. This lets them have a better chance of killing off enemies.
- Use your grenades! - Threat grenades are probably the most useful grenade in the game. Use them as often as possible. They're your own personal UAVs.
- Take advantage of ammo crates - Ammo crates basically give you unlimited ammo, so use don't be afraid to use your grenades. Smart grenades help a lot as they seek out enemies for you, so you can just throw them in the air and aim your reticule where you want them to go.
- Prone as often as you can - This can not only make it harder for enemies to hit you, but it also gives you cover as well as lets you regain health.
To do this, click “select task” in the main campaign menu. The list of mission selection below will say what max. difficulties: you completed each task, select the first episode, set the difficulty to “Veteran” and go ahead. You will still receive the trophy at the end of the game.
The only difficulty you may have with completing the game is at the very beginning of the last mission, here is an excellent video guide .