You map should look like this before you start to run. Both NAV points activated. Weapon in hand makes you a little bit faster it seems. Now activate the final button. AND RUN!!! First run to the chest in front of you. I prefer the jetpack method. Get your first loot. Now jump to the right!!! Don’t take the door in front of you. Follow the new marker. Don’t look… Don’t jump… Get your second loot!!! And run to the final button. YOU DID IT!.

As found on Youtube