With two basic categories, energy based and projectile, they range from lasers to homing missiles, with high caliber machine guns and energy bolts occupying the middle. One of the best features in the game is the ability to customize every part of your mech. If you use your lasers extensively, heat will rise, causing your mech to shut down to cool off. That's where the environment is tied into the gameplay. Battles will take place in hot deserts as well as over cold desolate locations.
Water also plays an important role.
First, it provides almost instant cooling for your reactor, secondly, it's a great place to hide for an ambush. Great graphics supplement the great gameplay. First thing that you notice is the horizon and the landscape, which stretches on for miles. On the horizon you'll see structures, hills and mountains. Another neat aspect is ability to deform terrain.