MP has 2 game modes: TDM and Ground control
Ground control: basically its like a mix between conquest and rush from bfbc2. conquest because you have to hold down an area until you capture it and take hold, rush because it moves in phases to different parts of the map. in other words its not like conquest because the whole map isnt open at once, and itsnot like rush because thhere is no bomb to set off. each team gets points to capture the area and it often shifts and goes back n forth to who holds the area. i find this mode to be great.
TDM: everyone knows what team deathmath is. first to reach 12000 pts wins.
the weaponry includes guns (duh), drones, and vehicles. drones and vehicles are bought from in game earned battle points. you get bp for killing or taking hold of areas in ground control, and you spend them during the match. you can buy things like flak jackets for extra armor (300 pts), personal uavs, order in bomb drops (800-1300 pts), and then of course the drones and vehicles.
vehicles: humvee (400 pts), light armor tank (1200? pts), heavy armor abrams tanks (2000), scout heli (2000), and apache (2800). everyone of course tries to save for the apache, but if a round needs a turn around, any vehicle is equipped with guns to help. the vehicles are a lil different from battlefield cuz u can man them and gun them at the same time.
drones: this is really cool and kinda like killzones bots. you have anti tank drones, assault drones, and spy plane marking drones. this gives your team advantages during battle. again, they are bought during the game. you operate them yourself though, so you must take cover before deploying drones. again, a lil different from kz because instead of just deploying a drone, u actually control it.
all in all, there are obviously a lot of battle options to choose from, and its all based on battle poitns, so the better you are, the more options you get.
perk system is different from others because you have 4-6 pts to buy perks with. they include perks for your soldier, for your vehicles, and for your drone. very broad and inclusive. very cool if u ask me.
the game is completely customizable to suit your likes and needs, which is what i like about it. a lot of players, a lot of things going on, many options. i disregaurd the critics (i havent played the SP campaign so im talkin about the mp only), and encourage anyone whos read the reviews with unfavorable comments to ignore them and check it out yourself. there is graphic loss due to how much is going on at once, and hardly any load time, but its still a great game.