add contest banner

fix a teleport avoid spot in stage 3
fix a door could use E to open in stage 1

add a human tp under boss room after push has enabled,avoid to fall into zm tp while fail to get push up
fix a spot on stage 2 might stuck player
fix toy hammer still can be use in stage 3 chase part
delay first zm tp at stage 2

fix nuke broken after detect zombies

nerf stage 3 valve health 10000 -> 5000
buff zm chainsaw duration 5 -> 6 sec.
fix a dark room zm push with wrong direction in stage 3
stage 3 the second path of fridge door top are seal now

fix a fall off teleport in stage 3
sp mode adjust

give more health for chainsaw holer avoid get kill too easily

fix a gap in stage 2 might stuck player

chainsaw info adjust

some fixs for singleplayer mode