I also had problems getting out of wherever I started. I played the Google Drive version. All I could do was run around. There was no combat or flying or anything. So really, all I can rate are the graphics. Which admittedly are amazing. The running animation is so smooth.
Viewing post in Matsuri Mecha jam comments
On the version downloaded from google drive, once you are in the city did you press the F Key on your keyboard? It should have started your mecha to float so that you could use w,s,a,d to fly and the mouse to look around. I didn't have time to add enemies or any kind of collectables. Hoping to update the project soon though. Cheers!