Originally Posted by samsaBEAR
Apologies if it's been said, but for the dragon boosting you don't need to quit to the menu. You need to find a way to die and then just fast travel back to the garrison. Easiest way is to find a group of scientists and kill three of them, that 'kills' you and resets the dragon spawn.
Edit: Scratch that, it resets the spawn but the kills don't seem to count towards the achievement, very odd.
Getting yourself killed takes longer than exiting to the main menu anyways lol.