[media] http://www.youtube.com/watch?v=1q2HmiZpR-I [/media] Text Tutorial 1. Buy a Sentry Gun 2. Approach a ladder and climb it, at the same time pull out your Sentry Gun as you are about to climb it. 3. Reach the top of the ladder, it should automatically pull out your Sentry Gun, place it. Now you should have no weapon in your hand, go to the weapon armory and buy a weapon and voilà!