I'll let someone like Dachs go on about how effective the powers really are but overall it was definitely a Mass Effect game.
Right, then.
A lot of the powers are pretty similar to their ME2 forms. Throw can now detonate Warp bombs, which is pretty handy. Overload can now do damage to organics and staggers them into the bargain. You can now do damage to enemies trapped in Stasis, although it seems to be reduced. Tech Armor seems to have been nerfed somewhat, and imposes a cooldown penalty if engaged - thus making it a viable option to go without using it.
Ammo powers are about the same but they don't work off of the global cooldown. Neither do grenades (each class has a different kind of grenade, except Vanguards, who have Nova, an area-effect power designed to be used after a Charge) or medigel. Speaking of medigel, you can now revive team members directly without wasting it. This is useful on higher difficulties, as your health will get attrited significantly. The health system, as you may know, is now more similar to the Halo (1) system, with shields and then five discrete health bars. You can regen within one of the health bars, but you can't regen multiple ones; that's what medigel is for.
Some of the new power evolutions look pretty cool. For instance, a level 6 Concussive Shot can be evolved to take on the characteristics of whatever ammo power you happen to be using at the time, turning into a sort of heat-seeking rifle grenade with freezing/zapping/burning/etc. powers. One of your passive skills - Fitness - can be leveled up to massively improve your melee capabilities (Martial Artist). Singularity can be evolved to explode on its own as soon as it runs out. An evolved Overload can chain between enemies.
One of the problems in the single-player segment of the demo is cooldown. During the escape from Earth, your cooldown is fine regardless of class, because you're only carrying a Predator and an Avenger. On Sur'Kesh, the second area (you only play about half the level if that, and it's just the combat part), you're loaded out with a Mattock, an Eviscerator, a Tempest, and a Predator, at least two of which are almost always superfluous. So even a Soldier has an annoyingly high cooldown. Apparently they forgot to move the weapons locker and the weapon mod bench from the cut portion of Sur'Kesh into the playable portion, so you can't change that out, either. Was a bit frustrating, although you can alleviate the situation to a significant extent by choosing power evolutions that improve cooldown - they let you level up to level 12 for Sur'Kesh, giving you a lot of choices as far as power use goes.
These are the same two levels that they've been showing off for awhile now, primarily because they want to minimize spoilers (which were a big problem with ME2). There really aren't any plot spoilers to worry about.
Maniacal said:
Also, desptie being in the options, vocie and text chat doesn't seem to be enabled in multiplayer.
Dunno about that - I've seen livestreams of the 360 multiplayer with people chatting (and more than a few where the idiots had voice chat malfunctions and just transmitted the sound of their own shooting). I never got BF3, so I don't have the multiplayer early-access code, unfortunately.