Metal Gear Rising Revengeance - Infinite Ammo Guide [360-PS3]
Yeahhh, because you never get tired of shooting enemies.
To unlock the infinite ammo upgrade from Doktor, you'll first need to cut off a large amount of left hands from enemy officers. This "activity" is also required to unlock an Achievement / Trophy in the game as we have already mentioned in the guide to collectibles. Then follow the guide to collect the left hands, then you can buy the infinite ammo upgrade at a cost of 50.000 points.
The enhancement is found in the group of changes for the hair with a really tasty description, typical of that jappo humor that has always been present throughout the Metal Gear series. Watch the video