Tools like let you tweak your save file on a USB drive:
In early versions of Iceborne , you could use a layered armor glitch involving the Poogie costume and the steamworks. It is patched. However, added a vast amount of layered armor (all Master Rank sets are now craftable via Guiding Lands materials). You just need to hunt Tempered monsters in the Tundra and Volcanic regions. Monster Hunter World Iceborne Ps4 Mods