Rule 34 Dev - 1boy 1girls 3d alien ambiguous_penetration animated athletic_female aware big_breasts blood body_control bouncing_breasts brainwashing breasts citizen claw clothing completely_nude completely_nude_female corruption facehugging female female_headcrab femsub full_body gun hair half-life half-life:_alyx half-life_2 head_parasite headcrab headcrab_zombie host human human_penetrating hypnosis hypnotized light-skinned_male male monster_girl nightmare_fuel nightmare_waifu nipples nude nude_female outside outside_sex pants_down pants_pulled_down parasite pistol rape sex soldierhunterm sound source_filmmaker standing standing_sex straight valve video zombie zombie_girl|6874847704