after you go down the first ladder the whole of waterbirth is multi. this is why i dont like to kill them in the first 3 corridors....the switching annoys me :? If you like getting down further into waterbirth into those areas dont you need a friend or 2? For the pad door i know you need another player but w\ the cade door you only need a rune throwing axe to get past,which i don't see in your settup. so Does it require more than 1 person to get into the multi area?