As the summary states, the "archer" trophy is bugged. I have tried playing in many different worlds of survival, on all difficulty levels, using both regular bow and crossbow. I have tried killing creepers from afar and close range, I even tried killing a creeper with an arrow in hand. None of them work. It is the last trophy I need to achieve platinum. I have also seen many other comments regarding this online dating back to March/April. There have been multiple updates since then and there still is no fix. I would just like recognition that you are aware of the problem and are going to patch it at some point in the future. Thanks!