Didn't have too much problems with an elf sorc. That combo is really good for taking out the rock bosses (though I started with the dragon shield, which was quite helpful). I just had to pop 3 or 4 of those corrosion plants and hit up Dracul at the end for some health boost to hit level 10 after.
Part 5 is kicking my ass repeatedly, however. It seems like Taurog + badge of honor is the only combo capable of doing it but I'm running out of gold with all the failed attempts
