gas_mask 27 weapon 14 gun 8 solo 8 highres 7 1girl 6 rifle 5 armor 5 uniform 5 gloves 5 sword 4 military 4 original 4 boots 4 hood 4 gritty 3 rocket_launcher 3 cyborg 3 helmet 3 mask 3 monochrome 3 touhou 3 stalker 3 artist_request 2 camera_eyes 2