Hawkeye on the ground, getting people out of harm's way

Some sort of transport, an evac possibly?

Cap's helmet has seen better days

You can't hide that pretty face

Stark looking at an old lab, possible tie in to Pym?

Looks like an Iron Patriot flavor of Ultron

No strings

Calling in the troops

Quicksilver and Scarlet Witch

Banner about to Hulk out

Fury is back

Who is the mystery woman? Wakandan perhaps?

Assessing the damage

Thor isn't happy

Scarlet Witch about to lay the smackdown...

...on Iron Man

Another mystery woman

Looks like she's being experimented on. Possibly a flashback? Widow's mother?

Chasing an Ultron under the freeway. Similar to Iron Man 2

Iron Man getting his bearings. More red in this suit than the Mark XLII

Iron Man's repulsors

Well Hello Black Widow...She's ready for the party. Those machine guns look high-tech.

Ulysses Klaw? Necklace a hint?

Ultron vs. Cap

This iteration of Ultron looks almost complete, he's blue at this stage instead of red.

Hulk and Widow sharing a moment

Ultron

Magic fingers

Thor redirecting lightning.

Thor giving it to Tony, Scarlet Witches influence?

Hulkbuster taken out with a pole

Hulk Smash!

Hulk getting Rock bottomed?

Something's up with the Hulk, more Scarlet Witch influence possibly