1st of all, good job !
What could you do ... mmh that PwnCo text is too plain, too flat :)
Same for the loading page text, maybe get a more .. asian-like font to fit that great background artwork ( damn, what a nice katana ) and instead of the skull face in your logo, maybe go for a shuriken or whatever if you completely want to fit that samurai/ninja theme
You made your own login screen, so why not completely removing TQ's Co related stuff like Enter & Exit buttons and the stuff at the bottom left i'd say
Just my opinion =)
Keep it up !