The final boss fight is insane. Rocket launchers that never miss and a villain who can make himself invisible (invisible, really?). Until the ending this was a good game. Unless you are a pro, skip this game and play Killzone 3. You'll thank me.
Ok I want to start by saying that I have played many, many, FPS games and even the famous Halo and Gears of War that would be this game's competition. Let me say Halo and GoW beat Killzone 2 and let me tell you why.
-Killzone 2 delivers some great shooting action. If you're looking for a shooter with some intense action than Killzone 2 delivers.
-The sound effects are amazing. Every gun, every footstep, ect. sounds amazing. Some of the best sound I've ever heard.
-Multiplayer has a ton of content.
-The graphics are pretty and make you want to look around while the bullets and bombs are flying around you.
Killzone 2 has very heavy controls, and fans used to Call of Duty or Medal of Honor will likely not enjoy this. They just don't feel natural or "right" even when you play to the end.
I'm not sure if it was because I didn't install the game onto the PS3 but the load times are horrendous. I mean you can be running to the next area and WHAM! you are hit with a loadscreen that lasts for up to a minute or two. This happens more frequently than it should and just takes you out of being "in" the game.
The campaign is mostly ground combat, which is a bad thing in this case, there are 2 missions where you use a vehicle. Even then the vehicle sections don't last long.
Also killzone 2 lacks weapons. Not a lot of variety in the guns. Near the end you get and electricity gun but its only one time.
Overall: Killzone 2 is a decent shooter but doesn't meet the standard set by CoD, GoW, and Halo. It has some great action, graphics, and sound but the stale campaign and frustrating load times make it a rental at best. So this is why I gave it a 6 out of 10.