Simple in that no mapping and twistyness - just you, the dungeon and a whole lot of fighting/puzzles :)
Intense combat balanced by basic 'find the key' puzzles.
Intense combat stick out in my mind :)
The puzzles I found basic, but the level lay out puzzles for continuing were good.
Lots of levels, just because they are simple to navigate doesn't make them simple!
Go back for more being beaten up :)
Levels/mechanics all fairly simple.
You'll have some new monster splatting skills by the end.
No story to link the levels together, but the challenge is the thing :)
Enjoyable dungeon to hack our way through :)
The spider/rat fights on level 9, the 'find the trigger to continue' level areas.
The 'find the x keys to continue' lay out of some levels.