Characters: Iron Man (Mark 42), Thor, Magneto, Abomination
Jump from S.H.I.E.L.D. Helicarrier, heading to the Central Park. Meet with Magneto and Abomination, then go to the new destination point. Follow the trace showed on the minimap to reach Doctor Doom's location - as you will see, the NYPD has set up a blockade on Doctor's vehicle. Use Magneto to take it off, so you can start the last mission in the main campaign.