The map is rather brutal, but doable. By default all enemies are killed off once the assault ends so that you can actually trade the hostage (this can be disabled after loading into the map). 4 achievements are included as per usual.
Big thanks to The Rant-Man for teaching me the editor and sharing their Holdout mechanics homework.
This is my first public map. The entire thing started as learning practice, but shaped up pretty well over time, so I decided to polish up and release it. Hope you enjoy.