[SPECIAL-INTERCEPTION] "BLACKSMITH" Max Reward Clear [GODDESS OF VICTORY: NIKKE]
First off, I apologize for the stuttering and lag throughout the video. This is the current state of the game and everyone is suffering the same thing at the moment.
To have a shot at clearing Blacksmith, it's a good idea to carry 2 Burst III units that has a AOE map clearing burst to clear out the bombs. The main challenge for the boss is clearing the bomb / reacting to the bosses 3 shot mechanic (example 1:08 & 1:46) force hide Scarlet when the boss's shots connect with her, it reduces the RNG that kills her and lastly swapping to Centi and releasing her ammo ASAP to regen burst which will line up your burst in time for the bosses missiles.
For triple red circle at 2:18, just quick snap with Scarlet does the trick, no need to save burst for it.