A solid 9/10 from me.
Takes a little while to get going, but once you're into it, it is very hard to put down.......it has that 'just one more mission' feel to it.
The graphics aren't going to be to everyone's taste, but I for one love the cell-shaded effect, and think it works perfectly for this game.
Loads of weapons, loads of shields/upgrade kits, plenty of enemies to test your guns out on, and the Special Skills also add something into the mix as well.
I can see the similarities with Fallout 3, but this (imo) is much more fun.
Am currently a Level 39 Hunter, and nearing the end of the game, and I can definitely see me going back for another playthrough using another of the characters.......not to mention Zombie themed DLC arriving soon as well.
Strikes me as a very underrated game this one, as not too many people on my Friends List seem to have tried it out, which is a real shame, as I would put it as one of the top three games of 2009 (alongside Batman Arkham Asylum, and the incoming Modern Warfare 2).
The fact its kept BOTH Halo discs out of my tray since I got this game is quite some task.
Go buy it!!