(adsbygoogle = window.adsbygoogle || []).push({}); TACTICIAN

Weapons: M82 Assault Rifle, Sta 52 Assault Rifle, Sta 11 SMG, Another type of SMG
Abilities: Spawn Grenades, C4, hologramic soldier (a fake enemy that causes you to shoot at it, wasting ammo, and getting noticed), radio jammer

INFILTRATOR

Weapons: M82 Assault Rifle, Sta 52 Assault Rifle, Sta 11 SMG, Sta 14 Rifle, LS13 Shotgun
Abilites: Saboteur, Boost, Jetpacks, assault’s armour, a special type of vision that allows you to spot enemies more easily (like AvP’s night vision/thermal vision)

MEDIC

Weapons: M82 Assault Rifle, Sta 52 Assault Rifle, Sta 11 SMG, Another type of SMG
Abilites: Defibrillator (the Zappy tool that Medic’s used in kz2), health packs, minidrone, poisonous grenades (am i going too far with this one?),faster healing, added armour.

ENGINEER

Weapons: Helghast LMG, ISA LMG, LS13 Shotgun, VC9 Rocket Launcher, Grenade Launcher
Abilities: Ground Bots, Repair tool, Hack enemy machines, extra guns/weapons on EXOs.

MARKSMAN

Weapons: Sniper Rifle, Sta14 Rifle, M82 Assault Rifle (well its accurate)
Abilites: Spot and Mark, Air Bots (saw it with spot and mark in the trailer), helmet that zooms.

where is the source of this?

I quite like the idea of having a holographic projection thing - seen this in a few crysis 2 gameplay clips and it looked pretty sweet!