One Plus One Equals Win is the final main mission in the "Silver Lining" downloadable content for Marvel's Spider-Man. Spider-Man teams up with Silver Sable to finally defeat Hammerhead.
Completing this mission rewards the player with the Cyborg Spider-Man Suit.
Story[]
Spider-Man helps calibrate Sable's class five laser array in her secret Sable International base, to prevent it overheating when used against Hammerhead. Hammerhead then arrives and battles them, The two work together, Spider-Man holding him in place for Sable's laser, but when her laser fails, she crashes her jet into him. This is enough to cause his Project Olympus suit to fail.
Spider-Man invites Sable to a pizza place, but she shuns him due to her war in Symkaria. She laments that she does not enjoy fighting but must to save her people. When Spider-Man calls her heroic for this, she shuns the label but shows gratitude to him for his help and drops him back at the city. In a post credits scene, Peter Parker teaches Miles Morales how to swing through New York.
Walkthrough[]
The first section of the mission simply involves following Sable's orders. After yanking the objects she points to and completing the calibration on the towers around the base, Spider-Man must web throw barrels outside to test the laser. Finally, using the terminal leads to a cutscene and then into the final boss.
Hammerhead boss[]
The Hammerhead boss battle is a challenging endurance battle. Hammerhead himself uses attacks similar to his previous boss battle: leaping twice toward Spider-Man (requiring dodges to avoid them), and using a long range laser attack. Hammerhead also brings in several other thugs, which are a good source of building Focus.
The objective of the battle is to keep Hammerhead in place while Sable uses her laser. After she uses it, Spider-Man can then punch him repeatedly for damage until Sable can use her laser again. To get Hammerhead vulnerable to being held in place. Spider-Man must web him up with Web Shooters and punch his legs to keep him in place.
The fight comes in phases separated by cutscenes. After the first phase, Hammerhead begins using a shield, which prevents all of Spider-Man's web attacks. Sable's bombs can disable the shield, and Spider-Man must Web Throw them at Hammerhead when she performs a bombing run. In the meantime, Hammerhead will summon several thugs. Simply avoid Hammerhead until a Sable bomb can be thrown at him and once his shield is disabled, the usual tactics apply.
After dealing enough damage to Hammerhead, the final time holding him in place, Sable's laser will not fire. Continue holding him and a cutscene will take place, ending the mission and the DLC. Any activities not yet complete for the DLC can be done for all remaining trophies.