How To Survive 2

For this method you need a second controller.

A second account would help but not necessary because you can sign in a guess account.

To sign in a second account press the menu button on the second controller and follow whats on screen.

The way I did this achievement was by completing a quest solo all the way to the point in which you need one item left to do on the main objectives then sign in my second "dummy" account and then do whatever was required to complete the last part.

If the writing turns green where the objectives are, you left it to late. This method needs to be done before that point.

Doing it this way credits you with 1 completed mission for your 15 required for the achievement.

You do it this way because if you sign in your dummy when you complete all main objectives and the writing turns green you will not get credit towards the achievement but will still get rewards for the dummy account.

As an example if you need to pick up 5 logs of wood to complete the main quest I would pick up 4 sign in my dummy then pick up the fifth log.

The easiest missions to do this on are the ones where you just need to talk to someone to finish said mission. You don't then have to worry about accidentally picking up items which happens. So don't worry about doing every mission this way because its not necessary. Plus you will be repeating missions alot anyway for other achievements.

As a bonus tip:

Use a second gamertag account as much as you can because the rewards you get playing it solo can be doubled if you have a second account there. Then the items your second account earns can be traded to your main account. This helps massively when you are trying to make/build everything for other achievements.

Hope this helps someone.