Seasonal asset decay.
Market-driven scarcity.
5-tier penetration physics.
Armor is a decaying resource.
Weight-scaled momentum.
Locked 1st-person nav.
Closed-instance raiding.
30-minute limit.
Non-hivemind AI factions.
Environmental perception.
Server-authoritative validation.
Roll-on-open loot tables.
Limb-specific trauma modeling.
Surgical-grade medical.
Dynamic atmospheric cycles.
Real-time snow tracking.
Physics-based propagation.
Material-dependent audio.