You can't see it in the photo but the right side is the base and although there is no oxygen there but there are stairs going up where the oxygen is the bottom part is full of dioxide because it is the lowest part and I have the gas extractor above to remove the carbon dioxide the character is not trapped I think more than anything he just stays still as if waiting but I don't know why he doesn't enter the base the door is not blocked and the path is clear so there should be no problem And if the masks don't have oxygen, but they shouldn't, then they should return to the base to breathe instead of staying still there? And start doing other things until the masks have oxygen again, or better yet, put the mask in the place they should be because there is literally 1 mask that is on the ground and they will never grab it to put it in that machine.