when installing the game normally a popup shows which installs OpenAL which is required to play the game. I don't know what went wrong, but I am glad you managed to play it either way. No I am not fourthpixel ^^, the reason it looks similar is that I used some assets/models form an asset store, as I cannot create everything by myself. He just used the same assets.
By the way would you mind using this link (https://www.phodex.de/bladequest) instead of the one you have in your video description for downloading the game and removing the direct itch.io link? I have more freedom to present my game on the website. Would be awesome!
Thanks for your feeback, hope you to see you playing the second chapter when it is out :). Stay tuned!