Looks great! I like the color choice.
I am no expert on design, but here is my input.
The first thing my eye goes to is your golem, and then it took me a few moments to find the "enter" button. Would it help a user to have the enter button somewhere near you golem since that is what draws your attention first?
Again, I am design stupid so bear that in mind.
Besides, I might need some Photoshop help from you here real soon...
https://www.darrylworley.com/
https://www.defendamerica.mil/nmam.html