Rudra sat in the lab with fatty kalash, and accompanying them was Neatwit , that guy thought that bombmaking would help him level up superfast hence he chose the class bomber.
This choice was a blessing in disguise for Rudra as he still needed time to figure out how explosion artist worked ... Time is not something he has on hand , and there are no skills or recipes currently available on the market for the Explosion Artist class.
This is the drawback of the special classes, the rarity of the class makes its resources available a great challenge , however thanx to Neatwit the current situation wont hinder Rudra's original plan .... They could craft the ice bombs and spike bombs.