Alright - now it works :-) For your first game this is really good! The walking & running mechanic is well done, sound effects, the integration of all the assets - and even a small intro. Good job! I found myself constantly running, wished this would be the default speed (it would save me from pressing shift key all the time). The boomerang is very helpful to get rid of all these pesky attackers. When I played the horn, though, I died after that.
Thank you for your kind and encouraging words regarding 9 Dayz. I am developing it with vanilla HTML, CSS and JavaScript indeed - no framework, instead my own library of useful functions and tricks I figured out along the way. You call it crazy, I call it interesting :-) It is so much fun to figure out what is possible with the web tech stack - amazing things got added in the past years. You know, I started web dev when all of this was in it's infant stage (the late 90s). Seeing what unbelievable progress all of this tec made since then makes me really happy and curious.
Btw, I gave Unity a serious try, but I was so disappointed about several things (first of all the Unity UI system, which is a dwarf in possibilities compared to CSS, also the huge build size for games that aren't really that complex at all). And the endless click cascades - it just doesn't fell like programming to me. But that's only my personal way to see it, I am a dinosaur here, with a particular old school understanding of what programming should be about.