I took these snapshots some months ago and found them on my cam recently.
This is Metro 2033, a really really solid shooter, especially when it comes to atmosphere and narrative design. However some of the guns do not have a HUD crosshairs, but use a laser pointer for aiming. This laser pointer is practically invisible on bright surfaces.
So, if you make me use post-its so I can see where I’m aiming, you might need to reconsider your GUI.