If you've ever wanted to be able to pilot a Gundam or mobile suit at all, this is a game you'll want to play.
Each weapon goes between being close combat, mid-range combat, long range combat and bombardment. You can use everything from swords, to shotguns, to rifles and even rocket launchers. Each of them have their faults and benefits, and you can carry 2 sets of weapons so usually a good idea to have one mid to long range or bombardment weapon and a mid to close combat weapon.
The armor/body parts all add to your movement, weight, defense and energy. The heavier you are, the less movement you have and more energy you use to move but your more likely to have more defense and/or energy. Where as the lighter you are, the faster you can move around and close distances so you can attack faster and you're likely to have higher attach but lower defense and not as much energy.
Now, you have 2 different gauges to always check in the game, one is the energy that your machine uses and the other is the weapons as they all, even swords, have cool off periods so you'll need to watch those. But really, I enjoy this game cause I've always wanted to actually play a game where I can pilot a Gundam and this is it. So even though I don't like PvP games, this one is all worth going against my normal preference just so I can have fun in a mobile suit!