Overview
A small, simple guide on finding a little-known secret shotgun.
The shotgun
NOTE: This can only be accessed between Tuesday and Friday
Step 1 is to go to the little gated off warehouse, just outside Paradise Mall, on the way to the Church/Cemetary. You can access it by going through the Running With Scissors building, through the back, and through a nearby tunnel.
When you come close to this little gate, it will automatically open up for a few seconds, causing it to go upwards. Jump on the far end of this gate (the side that goes highest), and quickly crouch-jump over to the fence on the left. This is a pretty tricky jump, and might take a few tries.
Next, jump up onto the triangular rooftop from the fence. You’ll find a few various weapons and ammo, but this isn’t your treasure yet. If you go to the far corner of the rooftop, you’ll see this wall where you’ll have to do a tricky curved jump to the other side of it. This is probably the hardest jump of the secret, and took me a few tries on my first go.
Look in the far corner, and there you go! The shotgun and a bunch of ammo will be laying in the corner, right for the taking. The gun has similar stats to the base shotgun, but a cool model and a VERY silly reload animation. Enjoy!
(thanks to mr. napalm for finding this before me)