MP will be awesome when the various matchmaking issues/bugs are fixed
Yeah multiplayer is broken right now, you either get stuck in loading- or respawnscreens or it randomly crashes, and the invite system doesnt work properly yet. Hope they fix it, the multiplayer is very promising, has a million things to unlock and some really funny killstreaks (my favourite "paranoia" makes that all enemies see their allies as enemies and it enables friendly fire for 10 seconds). Other than that its very similiar to Brink actually, the amount of weapons, gear and perks you equip determine the weightclass of your character, eventually influencing your movementspeed or ability to shootdodge.