When the game begins, Violette is seen from above, lying in a hospital bed. There are morphine syringes scattered across her bed, and the influx of drugs in her system creates a series of dreams that let her recount her past missions. Players have to hide in the shadows in order to avoid being detected. As a stealth-based game, lighting plays an important role. The HUD provides players with a silhouette of Violette which can be in one of three states. Purple means she is hidden in the shadows and invisible to enemies. White means she is exposed in light, but not yet detected. Red means she has been spotted and enemies are seeking out her position. If she is detected, she will either have to fight off the guard or escape.