Once you can level up and actively increase your power, it becomes addictive.
It is mostly a risk/reward simulator. Do you bank your souls/blood and level up, or risk going for longer and longer clearing the aisles?

I still remember one time I died twice in a row over something stupid and lost 8000 souls. It still hurts =)

The werewolf dude - clerical beast I believe - was tricky - but remember: molotov cocktails are your friends!