The GoG version changes the other weapon masteries skills to use a percentage bonus, so if you have the older version, then definitely stick with swords. Swords will be better in your game for that reason.
Warriors will get 6 HP per point into Constitution (30 for 5 points).
Hover your cursor over the Offense and Defense stats on your character info page and it should show you your percentage ot hit or be hit. The maximum to hit is 94%, the minimum to BE hit is 19%. Spend enough agility points to keep things high.
If you're OK with letting the kid die, then feel free to do that, it's a viable option. one level of Bless isn't that great (even maxed out Bless expires too quickly). If you let the kid die, the Vampire will be weaker when you fight him.
If you're level 17, you might want to kill the level 17ish orcs in the southeast, instead of the level 20-30 enemies in the sewers. There are some level 37 orcs in the far southeast, though.
