Yeah the trophies have been pretty easy. Most difficult thing is going to be going through the game 4 times for the character-specific trophies. It's one of my favorite PS2 games and it's still fun. I love being sneaky as Luger.
I bought it last week and just got the platinum to it and it wasn't too hard but I kept getting killed in a couple of the levels from the gernade launchers. My favorite character to use was Rico as his Chain Gun was OP.