There is a new build which includes an unfinished draft for the city level which is a massive level.  When I say unfinished I really mean unfinished. If you explore that level you might want to use the dev controls I will list them here. 

F2 = Reset Room 

F3 = dev view 

F4 = back to main Menu

F5 = show dev info

F6 = Toggle moon boots

1, 2, 3, and 4 are teleports to the different levels. 

8 is set check point 

9 is load checkpoint 

Page up and page down is forward a room or back a room 

Insert is toggle dash 

Home is skip main Menu 

Feedback on the new mechanics is greatly appreciated. over on the Discord