Cool, got it right at some point and got to the The End door...
...but what's that light behind it? So I went past it and through the light and it says knowledge is ahead. I'm like: "I'm so good I found hidden ending". I walk for sooooo long and see the core knowledge and then walk aaaaaall the way back happy: "Now I can go through that last door". And so I did, and it puts you through to the same walk :/
Still the core game is cool and visuals and sound are well made. Good job!