I recently finished God of War: Ghost of Sparta. Now that I've completed both the trilogy and the Origins Collection, a few thoughts about Kratos occur:

• Kratos doesn't like many things. One thing he does like though is his family... but that still doesn't mean he won't cut every last one of them down with his chain blades.
• Do not cross Kratos. It doesn't matter if you're immortal. Just don't. Being bigger simply means there's more of you for him to break.
• Even if you don't cross Kratos, he will still cut you down for the offense of being within reach.
• Your best hope for survival is to be a loyal Spartan soldier. Kratos seems to like those too, and is less apt to stab them. Less apt.
• If you're not a loyal Spartan soldier, your next best hope is to disrobe... But what happens next, some might consider a fate worse than death. Just be ready to hand over your red orbs.

Ultimately, Kratos frightens me. Not because of how powerful he is. Or how resourceful he is. Or how relentless and determined he is. Kratos frightens me because of how childish he is. He is a complete slave to his anger, his pride, and his petulance. He has no thought for the consequences of his actions. I mean, he sinks Atlantis--all of Atlantis, presumably full of children as lovely as his dear Calliope whom he misses with such gnawing regret and longing--for what? For just because. For because it was on the way to where his brother is.

On very rare occasion throughout the series, Kratos stops for a split second and asks "What have I done?" and "What have I become?" and then goes right back to doing and becoming without the slightest change in behaviour from the introspection.
Kratos has the emotional intelligence of a sociopathic bull shark, and it is for this reason that I fear the guy most.

But I sure enjoyed the games. :)

Happy GameSpotting!

A final thought: It was Athena's idea for Kratos to replace Ares as God of War. And Athena is supposed to be Goddess of Wisdom?! No wonder Olympus fell.