The game uses a first-person perspective. Players guide Manon through linear missions set in occupied France and other European locations, completing objectives such as infiltrating installations, rescuing resistance members, sabotaging equipment, and eliminating enemy units.

The campaign mixes firearms, explosives, stealth sections, scripted encounters, and occasional vehicle missions. Weapons are collected during missions, while health and ammunition must be managed between firefights. Progression is mission-based, with later stages introducing tougher enemies and more complex objectives.

Conserve ammunition for weapons suited to the situation, and search mission areas for supplies before triggering major encounters.

Use cover and corners to limit incoming fire. In stealth-oriented sections, follow the objective closely and avoid unnecessary combat, since alarms can make later encounters more difficult.