Some nice effort, but you really should increase the movement speed of the player. 🐀👍
Edit:
There is a run button ❓🐁❓❓
I /heavily/ suggest you switch those around, to make running the default and the run button the 'walk' button or a toggle.
The base movement speed is far too slow to not just run through most of the game, making it button dependent like this is just asking the player to keep a constant grip on the running key for their entire playthrough.
My pinky finger would send you death threats in finger paint if you made it spend twenty minutes pressing down the shift key.