8.5/10

Cons:
Team Ai will make you want to strangle someone.
Team fire can not be turned off. So be careful who you play with.
levels give you little to no time to pick up loot after completing.
PS2 graphics, gameplay and physics (though the physics are amazingly funny)
You'll need some processing power to get through some levels
Possible Seizure warning.
Annoying controls on some of the machines.
Sub-par story.

Pros:
Multiplayer (and split screen)
Way longer than expected.
Tons of weapons for all four classes, most of which have their own behaviors.
All four classes are unique in their own way.
The game can range between Massively easy and stupidly unforgiving.
Better rewards for finishing on more difficult settings.
Grand scale fights (several hundred maybe thousands on some maps).
Old school run and gun combat with new processing power.

First off let me say that I was completely blown away by this game. I managed to get it on sale a few months back (and didn't realise it was on sale), and thought that it was going to be a fun little time killer, but when i started racking up 20+ hours into it and it showed no sign of stopping and the levels slowly became less and less forgiving. I knew I had picked up a jem. The progress menu doesn't even display how many different types of enemies there are in the game until you encounter them.

The game's graphics are underpar but it'll still give your computer a little work out with just how many enemies that you'll run into constantly. After playing through each class I found that the air raider could "summon" mech type machines, and from there the game turned into a "starship troopers, meets godzilla and war of the world's vs me and my mini mechwarrior."

The multiplayer can be a little finicky at times but having four people in game with you is a nonstop blast (puns for days) and with the highest difficulty setting the game seems to ramp even higher with the more people you have.

By the end of the game I felt like a true war hero that saves the day from a world ending event. Definitely a game that i will keep installed just to have a bloody good time.