The newest trailer focus solely on players' mission. Your main goal is killing everything that doesn't look human to prevent the deadly virus with mutating abilities from spreading across the world as we know it. Six calls all units to unite in a fight and will give you everything you need in the battle against space zombies, including the cutting-edge nano-bombs and drones.
Ubisoft has also published a list of the enemies you're going to battle and it looks like killing them will be quite a challenge:
Grunts are common hostiles that become highly resistant when the parasite detects an enemy presence. To protect its host, the parasite armors its body and becomes more resistant to bullet wounds. Caution and stealth is recommended.
Breachers are proximity bombs that crater anything in their path. They make for a very agile opponent, but they launch themselves into the fray and blow holes in indestructible walls. Make sure you are nowhere close to them.
Rooters are a rarer type of hostile. They send out coral spikes from the ground to injure and immobilize their targets. Rooters are always on the move and will keep you on edge. Beware when dealing them the final blow; they become extremely lethal when on the brink of death.
Smashers are not discreet. The parasite reinforces its body under a massively thick hide, making it practically impervious to bullet wounds. They will also tear down walls without suffering any injuries.
Apex is at the top of the hostile food chain. It sends waves of hostiles your way rather than attack you head-on. They can hurl blinding projectiles, which can only be countered by Finka and Doc. This opponent is a real test on your team’s communication skills.
Rainbow Six: Siege - Outbreak will release on March 6th.