No problem, always happy to reply. Unfortunately brightness or gamma correction doesn't work correctly in Game Maker so I didn't implement it yet, which is why the game might appear too dark sometimes when your screen settings are darker than designed. I'll likely have to implement a custom DLL for that.
Cutscenes are only unskippable on a first playthrough but when you complete the demo you can skip them few seconds after they start playing with "ESC" button, the hint should appear on top-left corner of the screen