There's a nasty EXP cost every time you die, so should you die a couple of times, you can actually go down a couple of levels. Again, this makes the game a real pain in the ass even if you do have someone to res you because you still have the penalty which may make you too low if you were part of a party. It's just physically painful to play most of the time, and the only motivating factor would be if you're interested in the story. :\
I'm sure I wasn't strong enough to undertake the main quest but I'm pretty sure I didn't know where it was if I wanted to. After a week I decided I had wasted an inordinate amount of time on rabbits and gave up.