Thank you I guess ?
About the problems you encountered :
If you are talking about the colored doors : the red one is a very hard to find easter egg, it is normal.
But the blue one requiers you to move the blue key all the way to that room and collide the key with the door.
I do realize that it is not very intuitive...
I thank you very much for that feedback and update things for the beta. :)
(The gun requiers out of the box thinking to platform up in an unconventional way by using the props, thought it doesnt have a use in alpha...)