Ha-ha! I'm not a nerd, but I've finished this game during my vacation this year, and - Yantzee, admit, you just suck at it.
You can actually kill this very first Boss (three-eyed fatso with giant cleaver), although it's hard to find the right strategy. In this case you'll see the alternative opening in Dragon God's lair.
Also there is a way of crossing that bridge with the dragon without getting hit. Also, you can simply kill this dragon with arrows or bolts.
For me it's GOTY. But...
I've got to admit - if you're going to play it, play it on vacation. This game requires tons of time and dedication.
Oh, and please, please review Serious Sam HD. I suck at Serious Sam games)))