I still have wonderful memories of playing Half-Life 2 for the One Free Bullet achievement on Xbox 360. You have one bullet for the first padlock you have to open and then you can only use your wrench and anti-grav gun. You can use rockets and grenades but you get so few of those, and they have to be used against certain foes, that they hardly count. I had such a great time surviving with wrench and anti-grav only. It made me really get creative and resourceful. So much fun!


