Resistance is a great game overall. But it lacks the addictiveness that COD 4 and Gears of War has.
GRAPHICS: The graphics are excellent. Great lighting and textures. Explosions look awesome and plenty of cool special effects. The framerate holds up pretty well too.
GAMEPLAY: Very fast paced and restless, especially online when you have 40 people on the same server. Its quite simple, you basically run around and kill people with assault rifles, snipers, rocket launchers, and some cool new alien weapons. Each gun has an alternate fire. There are some new twists to the online mode that have never been seen before. There are two classes/teams you can be: The humans or the Chimera (aliens). The chimera have this special ability to go into a rage, which increases their health and the damage they inflict upon enemies, for a short period of time. To compensate the humans have grenades and grenade launchers at spawn. As fun as it sounds, Resistance gets old after a while, and you'll lack initiative to keep playing it unless you are in a very active clan.
STORY: Its quite interesting I guess. You'll find yourself wondering what happens to the main character. There are very rich cutscenes that will keep you interested.
OVERALL: Great game. Its worth buying but don't think you'll be into it for months.