In Soviet Russia, we not have no copyright, no private property!
In all seriousness though, you may use my assets as you see fit. I don't demand to be given credits, but I would certainly appreciate it. My country (Russia) does not have a legal basis for persuing copyright violations as of 2022, but I would't do so anyway, because this project is purely casual for me.
For legal reasons, I may or may not have to state that most of my assets are at least partially or fully based on or derived from StarCraft 2 assets, which are owned by Blizzard Entertainment, which in turn is the property of... freakin' Microsoft.
If I use the contents of other users, I give them credit for their work and edit them for my purposes, regardless of whether it is allowed by the author or not.