triple_wallpipe_entrance_b
triple_wallpipe_straight_b
elevator_roof_collar_glass
glados_screenborder_curve
triple_wallpipe_straight_c
debris_blacktile_cluster01
rail_horizontal_straight_128
debris_dest_phys_01_tiles
glados_wheatley_boss_animation
triple_wallpipe_straight_a
glados_wheatley_boss_screen
metalwall_bts_006d_gradient
backpanels_color01_nospec
black_floor_metal_001b_vertex
glasswindow_refract01_neutral
concrete_modular_floor001e
observation_tilefloor003a
observation_tileceiling001a
glasswindow_refract01_warm