I'll start...
The controls were horrible, who seriously needs to hold down two buttons to shoot, with no cross hairs, unless you clicked the right stick which brings the total count to shoot up to three. You could shoot in the general vicinity of what you were aiming at, and bam...its dead.
And with the spears, if you really zoomed in, I like how your finger was your crosshair...are you serious? Last time I checked, bones aren't flammable, I could be wrong, but I'm willing to guess that a bone will not catch fire.
They couldn't even get the cheats right, I tried the "God Mode" cheat 8wonder, and you still took damage, and could still die, I mean seriously...WTF?
How is it that King Kong, an appx 25 foot silver back gorilla weighing an estimated 45 tons, gets brought down by a single flaming arrow no wider than a pencil, while he can take 30 - 40 rounds from what looks like a thompson machine gun like it's nothing, come on?
Ehh, that's all that I can think of at the moment, but I'm sure more will come to me, I'll be sure to edit and update.
*Edit*
Oh ya, what's up with those flying things, are they supposed to be pterodactyls, dragons, or just demon spawn's from hell?