In the end, Black Mesa draws power from that limitation; it clarifies and rewires Half-Life's undercooked tale of invasion and colonization — one that continues with humanity itself colonized by an unimaginable cosmic empire. In that sense, Gordon arriving to Xen with his arsenal of weapons feels fitting; in a year like 2020, it should be clearer than ever that the mistakes, evils, and constraints of the past always ripple forward into the present and future.
Sunset Over Ithaca 