Hey man thanks for this review. Glad you enjoyed the game!
Could I maybe know what version of the game you played? It shows it on the main menu in the top right corner.
Can you also tell me which endings you got? And yes the X means that you have not found all endings yet!
Also please don't forgot that this project wasn't made entirely by me but that I made it with https://deadllysin.itch.io/ who is responsible for all the amazing audio that you can hear and heavily influenced the game and level design :D