Guards not reacting correctly in Air Base

[Graslu]

In the original game, you don't get instantly detected after dealing with the first guard or even the patrolling one if you're quick enough. In the port, it seems like they detect their dying friends through walls and from their back.

Here's the port vs 1964 GEPD: https://github.com/fgsfdsfgs/perfect_dark/assets/34986384/c32e11fe-2e41-4e52-97c5-cd534ed86d75