Tips for getting Adept David?

Depending on what level you are, if you start at Level 1, equip Dead Hard or We're Gonna Live Forever first. We're Gonna Live Forever allows you to get more bloodpoints by being altruistic, but ultimately it doesn't matter since you probably don't want to take the risk of saving someone once you get No Mither. I would ultimately say equip Dead Hard first, so you can get used to activating the button to avoid damage. This will greatly help your chances of survival when you do equip No Mither. Once you reach Level 5, equip the other suggested perk (We're Gonna Live Forever if you chose Dead Hard and vice versa). Once you reach Level 10, then comes the challenge when you do equip No Mither, since you can't bring in any other perks for the achievement.

Equipping No Mither means more often than not, you will get tunneled by the killer, because they will see you as an easy kill. To avoid this, you need to be pretty good at juking the killer and using Dead Hard. Try to stick with other survivors so you are never found alone. If you can, try to coordinate with the other survivors in the lobby chat (though they don't always talk) and see who can try to keep the killer off of you. Always keep your distance from the killer whenever you hear the heartbeat, don't be afraid of leaving an area when you hear it.

Never be afraid to sacrifice your teammates if they are not willing to sacrifice themselves to save you. Then and only then will you overcome the obstacles in your way and succeed in opening the sweet sweet gates of freedom.

Take a good SWF team with you and stick to the gens. Communicate with others and prioritize objective over points.