Umoria General Tips
Traps
Disarming traps give exp. But only do this if you are fine with the trap possibly springing on you, since sooner or later it will.
Invisible monsters
A good way to kill invisible monsters is moving into a corridor, waiting until it hits you, and then attacking the way you came from. If this doesn’t work, it’s one of the ghosts which can walk through walls. It’s usually better to just leave than trying to kill those, since they don’t chase much anyways.