Wait, how does the HUD show up if Gordon doesn't have a helmet?

[Colonel Kernel]

Allright allright, lets make things clearer (again).

If Gordon has a helmet:
- His HUD would be displayed on the inner side (of the helmet).

If he doesnt have a helmet:
- The HUD would be either displayed on his glasses, or he uses a special lens system.

OR you could still continue to think that "it's a game".

Its up to you.

 

[Danimal]

Or better yet: Who gives a shit.

 

[MuToiD_MaN]

Never know what hit 'em, eh, Dani?

 

[Schall]

Well since the HUD records health/ammo, I don't think that it anything significant.

Spoiler

Wait, isn't it a game?