

Limbs now require a Stimpak to be healed, even outside of battle.

These might give you that little extra needed to survive. Since saving is pretty much strictly tied to using a bed, loss of progress is a real threat, especially due to the big increase in damage taken.

On top of the ones you've listed (Strong Back and Local Leader): As the mode name implies, survivability is much more difficult, and can lead to loss of progress due to not being able to save at will. Many other perks have become much more useful with the changes in the new survival mode, especially in the endurance tree.
