The short version: This is recommended for those who are fine with a short single player campaing designed to teach you the fundementals and offline bot matches. The multiplayer is nearly dead, with only a few groups getting together in order to have large enough matches to enable ranking for gear. Other than that, it is a very fun FPS with custom loadouts and attributes.
Section 8: Prejudice is fun. Its a fantastic shooter, with plenty of ways make custom loadouts that suit both your playstyle and your situation. The armor/health mechanic adds a neat balance to the game, as some weapons do more damage to health than shield, and so on. The single player campain is enough to familarize you with the game mechanics, and show you most weapons and their variants. I have personally put a lot of time into this game, and have really enjoyed it.
However, it is a multiplayer game at heart. The main draw of this game was the many gametypes for multiplayer. Since the multiplayer has, for the most part, died, then the only option you have left after the campain is bots. While the bots are usually pretty good, ultimately, they are just practice. Playing offline with bots will allow you to earn most acheivements and unlock a majority of the weapons and abilities.
As is the case with most of these types of shooters, many of the best benefits are for high level online players. Without getting into a ranked server, it is impossible to get these. There are only a few people who get together a large enough game to actually activate the ranking system. Combine this with GFWL, this game can be downright frustrating to get some of the features to work.
As sad as I am to direct pvp and multiplayer players away from this game, it has lost much of its worth. If you get it cheap, and only with the expectation of a short campain and offline bot matches, then it is a fun shooter with some unique mechanics. For everyone else, I would not recommend getting a practically dead game. The reason I am giving it a postive review, is because it is still a great game, and it would be fantastic if the multiplayer was ever revivied.