First of all congrats, I really like your characters there even though I'm a bit concerned about their size - maybe they are a bit too small?
My only other critique about the characters concerns Agent Y's hair, which is not only lost in the background as someone said, but completely flat, and it gets noticed as everything else is shaded with care. You could try a cloud-like effect, maybe?
The background overall is a bit dull, but I know it's a work in progress and anyway more detail would probably be lost in a videogame.
Can't wait to see Incubus finished
Keep up your good work... even though animating all those characters is going to be a (gothic) nightmare!
ps - ...and let's hope you manage to convince your programmers friends!