Shogo is a pretty decent game. I think the game is made on Blood 2 engine, the graphics are OK, no fireworks there. The game play itself is almost identical to most FPS. In Shogo you sometimes play inside a mech and some missions are as a regular person. If you love FPS games, I think you will like Shogo as well.
One of the great RPG's ever made if you have never played it you absolutely have to. The graphics are outdated, but graphics isn't what makes games good in the first place. Enjoy the game!