[Delta Force Fanfiction + Rule-Based Horror + Mild Horror + Smart Protagonist + Teammates]
Every map is a deadly rule-based horror scenario. The only way to survive is to make it out alive.
Here, the game has become reality. You have to scavenge for supplies, defeat enemies, and reach the extraction point before time runs out, just as you would in the game. But unlike the game, death is real. Worse still, every map has a set of rules that must never be broken. The consequences of breaking them are more terrifying than being killed by an enemy.