Team Buddies was only ever release for PS1. When the game was originally designed, Psygnosis were still making games for non-sony platforms. A PC version was initially planned and the first Team...
it is now.
Yes, its called Steam Achievements
No there is 360 PS3 Wii and PS2
as far as i know there is no PC version of god of war only for psp ps2 and ps3