This mission is started the second you enter the simulation. Once started you will be guided through paths in the cliffs which will lead to a building where you will go through it for a while. This whole path is straight forward and hard to drift away from. If your worried about ammo and falling off the ledge and health don't be because falling off just warps you up and there are infinite ammo and health packs everywhere. But once through the building you will come to an outside cliff area with three giant guns. You must place explosives on them and walk away and continue on doing to the same for the others. Once done you will be warped to another area where the achievement will unlock.