Objective: Surrender to Scarecrow to save Robin and Gordon? This will be represented late in the mission by the Nightfall protocol (examining your mission select screen will show 100% complete tasks glowing orange and adding to the Nightfall counter). Note: Shortly after you reach the first objective marker, the game will scan your percentage completion of most wanted missions to determine the ending given to you. Below are a few hints about certain situations during the mission as opposed to an actual walkthrough to avoid plot spoilers. Note: This mission isn't particularly difficult, so you should play through it without a guide for the story impact if possible.