[@Necroes] All very true! That's why I'm not bothering to demand things be changed, but I will say that it depends on what books you read really. True, there are many that do make them out to be nigh invulnerable, but there are others that similarly show them to just be massive humans in armour - all one needs to do is take a look at the organ list to see that 'taking a lot compared to a human' is an understatement.

While I also don't prescribe to them being indestructible, I do think - perhaps due to your penchant for not going by the established lore - that you actually underplay them.

Let's see...

Two hearts, a fused rib cage and general rapid bone growth, overactive red blood cells that heal in seconds (which means that Xeph's inner and outer tissue would have healed almost as soon as he was dragged off of the spike), a 'recharge' node, a poison and toxin filtration system, acid spitting, and then the power armour on top.

Again, I've [b]no problem[/b] with Xeph being wounded, surgery or anything, I just think downplaying the abilities of being that are more like gods to your average human is just as bad as ignoring it completely and saying they're just big guardsmen...or armoured Ogryns.