Beating INFERNUM DoG and Old Duke AT ONCE

This video made to show ‪@shanenothing‬ that this is in fact possible and that he has skill issue. all mods I used: calamity mod infernum mod calamity music boss cursor Nycro's Nohit Efficiency Mod music:    • Terraria Calamity Mod Music (but it's lofi...      • Terraria Calamity Mod Music - "UNIVERSAL C...      • Terraria Calamity Mod - Universal Collapse...