Monster Madness
50 Achievements
1,000
Xbox 360
Prowler On The Roof
Collected every weapon part on Streets of Suburbia. (on Thriller or higher)
15
How to unlock the Prowler On The Roof achievement in Monster Madness - Definitive Guide
I wish I could make a list for every weapon part but it is near impossible because there are so many of them. You need to make sure that you double check roof tops and under objects like barrels and boxes. Also stand still if you are having trouble finding some, forks and pipes like to blend in with the environment. Also I suggest doing this achievement on Madness becasue it gives you massive weapon parts for level 3 weapons.