Hi! Here your answers:
1. The map is supposed to be a tool for the GM, when they prep the game. So, the hunters will arrive in the area that the GM decided to be the "start of the hunt".
2. Yes
3. Stun work as a narrative framing situation: if you stun an enemy, the enemy can have trouble moving, reacting, or making a move. However, it depends on the enemy - perhaps it's a monster immune to stun - again, this depends on the GM's preparation.
4. It's a reference to the From Software games (on which Bloodstone is inspired by): there is always a "class" like that, so I added it to the game as homage.