Resident Evil Revelations 2 - Raid Mode - 'Rainbow' Rarity Weapon Farming

Farming for 'Rainbow' rarity weapons on Gauntlet VIII-02 on Code Red difficulty. This is, in my opinion, the quickest and easiest level to farm. I haven't completed all levels on Code Red yet but it seems only the enemy level and wave composition changes with difficulty. The map layout remains the same. The video starts with two failed runs then cuts to me finding a level 100 Bushido, which is a unique named Samurai Edge. Pretty sweet handgun but I can't see it replacing my level 100 Triple Shot.