So on Kino you will need to have quick revive, and mule kick. Get the ray gun as your 3rd weapon. After you have done that find a way to down yourself and lose your raygun, after that you must turn on the fire trap and throw all your grenades inside the fire. The final step is to kill 50 zombies with the electric trap. Congratulations, you have your golden ray gun!

On Five, get the ray gun out of the box and pack a punch it, then when the pentagon thief comes let him steal the ray gun. kill the pentagon thief and use the firesale to get a winter's howl. if you do not get the winters howl with that exact firesale then you must do it again. After you have complected the steps, go to the top floor and kill 30 zombies with the electric trap, when this is completed, you unlock the golden ray gun.

Acension is the easiest one, first you need the normal ray gun by round 5 or it will fail. once you have the raygun buy phd and shoot yourself 69 times with the ray gun. After this step is completed you will hear samantha laughing. If you do it and dont hear her laugh, you need to update your localization files. When the step is complete, buy mule kick and get the thunder gun, wait for a monkey round. when the round comes, shoot the monkeys with the thundergun only. after this step is complete, down yourself and get rid of the thundergun. the final step is to launch the rocket and destroy it with the ray gun. Now you have unlocked the golden ray gun

this one is hard, you need the VR-11 Pack a punched for the first step. when you have this, shoot 5 zombies with 5 shots with 100% accuracy, If u miss a shot, you must restart your game. After this is completed, kill george and retrieve the Wunderwaffe, proceed to do the same step as before but with the waffe. After this step is done you will hear george say "you have golden ray gun" and the reaster egg is complete.

To get the golden raygun, go to the pack a punch area with a ray gun and pack a punch it. Do not grab the ray-gun, let it go back into the pack a punch. when you get booted off the stairs, you must get the baby gun from the box and kill 56 zombies with it, after this is done, go to the waterfall and press the button to cause the flood. If you have done the previous step correctly the water will cause the baby gun to fall out of your hand and get taken away. You must find the baby gun somewhere in the map, it is a random location. Once you find the Baby gun, pack it and shoot the napalm zombie with it and kick him away. Once this is all complete, you have unlocked the golden ray gun.

This one is simple, first you must complete the moon easter egg and blow up the earth, after that go to the earth and look over outside of the map, you will see a destroyed storage crate with the golden ray gun inside of it, throw a gersch device at it and it will be teleported to the moon, once that is completed, go to the biodome, and you will see the golden ray gun teleporting on the jump pads above, you must grab it from the jump pads by landing on it, but it only stays on each pad for 5 seconds. After you grab the ray gun, it will transform the ray gun into a gold one, if you do not have a ray gun, get it out of the box and it will be golden.