class guides: infiltration units.
if the enemy has a pretty good defense, or is capturing an objective, you need to do your Solid Snake impression, sneak in, and take them out from the inside. there are two units that can either infiltrate undetected, or rush past enemies and unleash a devastating attack. these classes are Nightcap and 80's action hero.
Nightcap can turn invisible and go behind enemy lines. use Casting Shadows and then Fung Fu to eradicate enemies in the objective, giving the team a chance to either capture the objective, or defend it. just like pressure units, this will have no effect if the nightcap is the only one attacking.
80's can not go invisible, so he must find a path that is not guarded and start with Dynamite Dodge, followed by Rocket Ride. this will give the team a chance to capture or defend the objective. just like Nightcap, this will not work if 80's is the only one attacking. I debated on whether to put 80's or Slide here, as both can infiltrate and unleash devastating attacks from within. I decides that slide is a crowd control unit that can infiltrate, and not an effective infiltration unit.