Wow thank you for a valuable and in depth review!
It's great to see many people are enjoying the dialogue as I had put a lot of focus on it! Originally the teleport's intended purpose was a "get out of jail" form of mechanic but I wasn't too fond of that being its sole purpose so I tried to work it into levels wherever possible, glad to see that didn't go unnoticed.
I had implemented the dash in under 5 minutes so it's pretty rough. The resolution switch was moreso a quick fix for those who switch to fullscreen as I'm not too keen on how to get web-based resolution switching working properly in GameMaker Studio 2. But they are definitely at the top of my list of things to fix for the next build.
Thank you again for a wonderful in depth analysis!