Call of Duty: Black Ops II
90 Achievements
2,000
Back in Time
Use a future weapon in the past.
10
How to unlock the Back in Time achievement in Call of Duty: Black Ops II - Definitive Guide
Not hard at all, but not sure if you can do this before completing the campaign, load up the first level and select a future gun, run through the mission and it will be yours.
Here is how to earn this.
1. Sadly you must complete the game before you can bring a future gun into the past.
2. Load up the campaign and press REPLAY mission.
3. There are many past missions to choose from but I chose "TIME AND FATE 1986" for my mission. And play on RECRUIT to make it a cake walk.
4. For my weapons I chose the M8A1 Assault Rifle and the KAP-40 Automatic Pistol.
5. Sadly you cannot just use the gun you must earn at least ONE KILL with either weapon or both if you wish. Then you must finish the level making it a little bit time consuming but not difficult.
6. Enjoy your heavily scripted mission events and achievement.
Video below showing all you need, from level to the weapons you can use. I edited out most of it cause all you need is the basic details. Good luck guys.
You must first complete the campaign. Then pick a past mission and select a weapon you used in the future. (Storm PSR, MSMC, etc). Past missions consist of Pyrrhic Victory, Old Wounds, Time And Fate, and Suffer With Me. You need to get a kill with it and it should unlock at the end of the mission.
First of all, you need to play through some Story Missions to obtain future weapons. You unlock these weapons as you progress. The missions from the past are "Pyrrhic Victory", "Old Wounds", "Time And Fate", and "Suffer With Me". Play one of these and change your loadout before starting the mission. An example for a future weapon is the KAP-40 automatic pistol. Kill an enemy with it and successfully complete the entire mission. The trophy will pop after the mission is over. You are allowed to drop your weapon during the course of the mission.