Magic Resistant, Infravision, Knife Thrower and Medic.
For the less obvious ones:
Knife Thrower gets you 1000 knives and that lets you pull things at a range for quite a while.
Medic lets you start with a satchel, 20 bandages and 25 in first aid. This helps you avoid having to take breaks early on and a head start at a skill you will use for the rest of the game.
