Shepard will receive e-mails from allies asking the Commander to wait for them somewhere in the area, or to invite them up to the Personal Apartment. The Silversun Strip provides another main hub area on the Citadel where Shepard can interact with current and former squad members.Mission: Citadel Arena: Charity Reaper Challenge.Mission: Citadel Arena: Cerberus Challenge.Mission: Citadel Arena: Prothean Challenge.Mission: Citadel Arena: Thermal Clip Challenge.Mission: Citadel Arena: Reaper Solo Challenge.Mission: Citadel Arena: Medi-Gel Challenge.Mission: Citadel Arena: Spin Zone Elite Challenge.Mission: Silver Coast Casino: Infiltration.Unavailable until the first encounter is completed. This must be completed to access the second encounter. There is also an option to wait at the bar for Joker, and later, Urdnot Wrex.ġ First encounter.Ashley Williams can be met here after she sends Shepard an invitation.Garrus Vakarian can be met here after he sends Shepard an invitation.The party supplies for Citadel: Party can be purchased here.