A lot of character showed off new, cool powers in the flick. I'd like to see some of them added to the game!
Hawkeye - turning his bow into a staff and using it for melee
Black Panther - triple hurricane kick which I believe was done to Cap to start off their fight in the airport
War Machine - that melee hammer thing he pulled out
War Machine - sound cannon
Iron Man - he shot restraints that tied themselves around Cap's ankle during the final fight
Black Widow - throwing small electric disks