Oh that's annoying, will try to look for this bug.
Hey, it's archive file. You have to extract it into some folder, then find the exe file inside the folder. No installer or anything is included, it works as is after extraction.
Hey, thanks for trying out the game!
Thanks! A bit embarrasing issue, I was experimenting with rigidbodies and forgot to disable gravity in editor for guns.
Yes planned
Definitively not, will fix it in the next alpha