A revised map is added. Two new firearms are introduced. — The AC130 slays the zombies. Steam update #724348

A revised map is added. Two new firearms are introduced.The Abandoned Factory 2 map features both day and night modes.Audio is optimized, and the gunshot bug is fixed.The smoothness of the two Crash Site maps is improved.The clue mode is optimized: generated items are prevented from being unsearchable due to flipping.The weapons and equipment of ground personnel are enhanced, including the MP7 and Scar assault rifle.An AK-series firearm and a designated marksman rifle are added.The shaking issue of designated marksman rifles when scoped in is fixed.The screen shaking of ground personnel caused by aerial gunboats is reduced.