Hello, Thanks for trying the Game!
Actually pressing E was made for debugging but we forgot the remove it. However, you can use WAD and Mouse for rotating ,and attacking Animations.
You can check different vibes in the city until you find your girl dies and you die with her unable to defeat spearmen which will make you travel to the underworld to get the Marvelous Sword.
There, you can check the workshop to open a secret a gate to meet the final boss but unfortunately we ran out of time to put it in the scene. We make this happens in a new version.