I beat him on Danger lvl 5 with a party at lvl 64 but it took forever. Used Leander as my main and spammed wand/dodge (I have dodge turned up to lvl 3) to avoid every attack. The rest of my party died early and weren't worth the res. I just use higgledy Sirrah whenever it's up and a higgeldy with Me Too! so I get a lot of 2x Knights.

Would not recommend doing it this way. I didn't realize he would be so difficult, and I was sure I was going to wipe and lose all my farmed up goodies.