Added new boss enemies: Yeti, Gatherer

Added wave progress display

Reduced projectile resistance of charging enemies while dashing, from 0.9 to 0.25

Revised the ram logic of armored vehicles: ram distance now depends on damage and enemy HP

Fixed abnormal burn damage of Depleted Uranium AP Shell. Burn damage changed from 2.6 per frame to 2.6 per second

Adjusted the heal aura of monsters: percentage healing is replaced with fixed value healing

Added ram resistance to all monsters. Removed heavy stun when hit by rams; some monsters gain full ram immunity

Updated armored vehicle ram damage formula: from 100% - Enemy Damage Reduction% to 100% - (Enemy Ram Resistance% + Enemy Damage Reduction%) / 2

Added blood splatter effects on monster death. Blood stains can be washed away by rain

Remodeled armored vehicles for better visibility, added glow strips and trails

Drones and small robots are now visible on the radar

Killing enemies with armored vehicles increases screen blood intensity. Blood fades over time, and fades faster in rain

Extra ram resistance added to tank-type monsters

Various performance and experience optimizations