Sir Chadwell is a pain to build in Megabonk because his Corrupted Sword is arguably the worst weapon in the entire game. Playing with Chadwell in most of the early game revolves around finding any other weapons that aren't plain garbage to start farming mobs for real and leveling up.
There's a light at the end of the tunnel, though. If you give him Weapons and Tomes that thrive with Size and Projectile Count, even the Corrupted Sword won't look that bad. Here's the best build to run with Sir Chadwell.
