Tough to give a great review, but it does give some mildly fun feelings.
Now for the good points this is a little bit of a con off of older games like fallout and diablo, but it includes a various amount of randomized missions based on reputation level. Infinite amount of weapon stats, more then just one type of weapon, 4 different characters to choose from (with possibility to rename them). Cybernetic pieces are able to enhance a wide variety of skills, and attributes including two skill tree's full of things to upgrade, 6 player stats which all cover different benefits.
A sequel would be great or even making this into a series, since a post-apocalyptic world can go a long way. Repetition may also bother most since it is mostly the same thing the entire game, running around killing mutants, assassinating targets, eliminating mutants, collecting items on a various amounts of the same looking bases, prisons, desert areas. This game was in 3D and not in first person which seems to be a great view for these types of games, so this being a game from 2005 it was an early time where this passed for a game and today more games focus on graphics and not story.
This game can be remade better but for a start this will pass for today's standards (mine anyways). Give it a try and see how you like it for yourself instead of reading someone else's review saying its bad.