At the start of level 7 when you get inside the mall this stupid lepercaun will ask you to collect 2 of each golden zombie in that level. In order to attract them to you, you need to push . Once you attract them they will have a heart over there head. Once you get them bring them back into his little rainbow circle and they will be captured. Some are hiding in little pedestalls with rings arround them. You will need to destroy them to get them to come out of hiding. In order for this achievement to unlock you need to not let any of the gold ones die. This isn't hard becasue other zombies will only attack you if you touch them. The only thing you need to watch out for are the exsploding zombie's. You need to shoot them before they drop there bombs becasue they will chase after you and detonate on you and may blow up your goldens.