Just a few questions that I've tried scowering the books for and can't seem to find. If you know where in the book these answers are given could you please reference the page, it would be greatly appreiated.
Also, some of these are situational and require answers more in the line of opinions or house rulings.
1: How long does it take a character, mount, etc to become fatigued when going full out movement during travel?
2: Sundering a weapon of armor piece is something I can understand. However, when character want to target a specific body part, knees, hands, left shoulder, etc what would the increase in difficulty become to hit the specific point?
3. Massive damage rules. In 3.5 you had to make a fort save if you took 50% or more of your health in one attack to stay alive. Where is this rule in Pathfinder?
4. I had a player with a Darkmantle attached to him from head to torso. His arms were pinned to his side and the fighter comes up to wail on the Darkmantle. With each attack the Darkmantle took, I had the fighter roll a lower dice to injure the player. While the players argued that this wasn't how attacks into a grapple worked, I argued that this wasn't two humanoids wrestling with eachother. Anywhere the fighter hit the Darkmantle, the other player was only a thin leathery membrane underneath and didn't recieve damage immunity because of the Darkmantle. He was being hit as well as the creature. How would you have handled this?