Do hunters use m-atk or p-atk? Sorry about the noob question, I'm just starting out.

p-atk. Engineers have one or two m-atk skills, but in general they're all p-atk

Definately p-atk. the only skill they have that doesn't do physical damage is Poison Arrow Rain...but it's just a DoT that does nature damage, and the damage it does doesn't change with a higher m-atk.