As far as i can tell you don't get your full HD on level up and it also doesn't seem to be random on my fighter I have leveled a few times now and each time he is getting 8 HP with a +2 con bonus. This should equate to 12 hp/lvl or at least a range of that but all my companions and Myself all seem to get a set amount of HP that is nowhere near max HP. Anyone else able to get max hp on level up or at least random HP on level up?