Thanks for the comment and good luck with the game! I've made a new upload of the package and you can download it directly using the link in the description.
@@RobinDale50 That is true, well, you can orientate the decal rotation to the normal rotation of the surface that got hit instead of using the opposite orientation of a physical bullet, to get the normal (outward facing) rotation of the surface that got hit, you can use a "Rotation from X Vector" node, coming out of the hit normal of the bullet line trace