The Polygun is without a doubt one of the toughest weapons to obtain in Remnant 2's Forgotten Kingdom DLC. And rightfully so, as it's the most damage-per-second addictive of all the Soulslike shooters.
Remnant 2 (DLC) – How to get the Polygun (Shortcut)
If you're looking for a weapon to take on your enemies with and that has a refined look, the Polygun in Remnant 2 is your best choice.
The Polygun is hidden beneath the Labyrinth in Remnant 2. To get to it, you must shoot 13 cubes scattered across the map in a specific order.
Before you go ahead and start looking for the cubes, there are requirements to make them appear. The first is to reroll the entire campaign on a new Instance after playing the Forgotten Kingdom DLC. Secondly, the entire Labyrinth map needs to be unlocked, as the cubes are located in different areas.