Looks good so far.

There's one thing I'd like to see though: enemies having a sense of self-perservation.
SOME enemies might give up when the health is too low and too many of their companions die. They would drop to both knees in surrender and drop their inventory. Or run away after dropping their weapons.
But "trying to run" seems pointless if they can never leave the map, thus you WILL end up having to kill them.

Just something for the players that do not want to murder every living thing. You can also make it that spells like fear increase the chance that an enemy might simply surrender.