Objective: Complete all 3 intel objectives per mission: 📸 Photograph Plans, 🎤 Bug Comms, 🧪 Steal Samples.
Approach an objective marker and hold Action (Space/E) for 3 seconds to complete. Guards patrol between rooms — if they spot you, Alert rises.
Hide: Press H or tap Hide to duck behind furniture (invulnerable but can't move). Alert levels: Safe → Suspicious → Compromised (fail). Score per objective + ghost bonus for zero alerts.