Master lemons, thats not a glitch, you can still play if all the enemies on the floors are dead but your lifts have gone (obviosuly because otherwise with no lifts the monsters would destroy the cables) and you can but lifts after you've completed that level. Its a very good game though, 5/5 and favourited, died on level 15 though, determind to get badge.
I have the same problem witht he pause menu, and also i seem to fall through aot of the floors, when u quite clearly land in the middle of it so its not like i fell of the edge, 2/5 cos of all the glitches.
 "Smigpong!"){kind=icon}
 "Shopping Cart Hero"){kind=icon}
 "The Next Floor"){kind=icon}
 "Age of War"){kind=icon}
 "Warfare 1944"){kind=icon}
 "Run"){kind=icon}