Here are the basics that you need to know:

• Can be done on any difficulty
  
• Only 5 horseshoes will be present at randomised locations
  
• There are 16 possible locations
  
• After collecting the 5th horseshoe, the achievement will be awarded

If you are reading this guide outside of Steam it means my work got stolen (again), I swear to God; I shall hide under your bed at night.

1 - At the riverside docks
.
2 - Behind a stack of hay at the Windmill
.
3 - In the shed between the Riverside Docks & Barn A
.
4 - On a barrel at Storage next to the Windmill
.
5 - Behind crates on a patch of grass on your right when entering the ranch's gates
.
6 - Near a tire stack inside the garage
.
7 - In a shed near the Water Tower
.
8 - Behind a car near the Water Tower
.
9 - Next to a stack of hay at the Shooting Range
.
10 - On a crate at the Shooting Range
.
11 - Outside on the wall of Barn C
.
12 - Inside Barn B, to your right, upper floor
.
13 - Inside Barn B, to your left, on the wall
.
14 - At the back side of Barn A, outside on the ground
.
15 - At the back side of Barn A, outside on the wall
.
16 - On the truck at Barn B