Assembly on the windings of the hands "Blue skulls"
I did the position myself.
The assembly contains such skins as:
Glock-18 - Dawn
P2000 - Handgun
Deagle - Rusty Cobalt
AK-47 - Surface tempering
M4A4 - Griffin
AWP - Gungnir
Knife - Stiletto Tiger Tooth
Other models from CS:GO (including the bomb and grenades), but without skins
Also included in the assembly is a HUD, which is hidden on the screenshots, but you can see it in the attached video.
Similar mods for CS:S