Let’s clarify a few things. I find those votes to be quite misleading, as the map has serious issues.
The first and most critical problem is the crash caused by the SG shotgun (the custom script).
The optimization is very poor (please optimize it properly), both in the files and the polygons of each area in EVERY MAP of the series.
Some areas of certain maps are not intuitive at all, which leaves you processing for an hour trying to figure out where to go.
For the love of God, please balance some weapons, including those with scripts. There are about three weapons that are completely useless, dealing only 1 HP damage (the scripted ones).
Overall, the maps are poorly balanced, which makes several areas VERY BORING.
Oxygen does not function properly (especially in the first map).
Lastly, what is the need to give NPCs so much health? There are other, more feasible solutions regarding NPC HP.