A lokacin da Joker da Joker biyu suka yi yaƙi, Strange ya kunna Yarjejeniyar 10, wanda aka bayyana a matsayin makirci don kawar da dukan jama'ar Arkham City da kuma halakar da masu aikata laifuka na Gotham. TYGER sojojin fara kashe fursunoni kamar yadda Strange ya kaddamar da hare-haren makamai masu linzami a kan mazaunan Arkham daga sansaninsa a Wonder Tower. Wani makami mai linzami ya buge da karafa, ya binne Batman a karkashin tarkace. Kafin Joker ya iya amfani da halin da ake ciki, Talia ya isa kuma ya ba shi rashin mutuwa a musayar rayuwar Batman. Bayan ya tsere tare da taimakon Catwoman, Batman ya gamsu da Alfred don kawo karshen Yarjejeniyar 10 kafin ya bi Talia da Joker.
Yarjejeniyar 11