Hitting Kai Guy and then talking to him again is how you get Kai Fist in Pilgrammed on Roblox.

Quick Scoop

  1. Go to Kai Guy’s location from the Plains/Mountain side, following the route shown in the guides.
  1. Talk to him and accept the fight.
  1. Beat him by parrying his attacks and using the knockdown window to deal damage.
  1. After the fight, talk to him again to unlock Kai Fist.

How the fight works

Kai’s fight is mostly about timing, not rushing in. The guides say to parry his punch strings and blue fireball, dodge the uppercut, and move around during the meteor/stomp phase.

A simple approach is:

  • Parry the easy attacks.
  • Don’t attack during the uppercut or while meteors are falling.
  • Hit him when he gets knocked down.
  • Repeat until he’s defeated.

Extra note

If you meant Kai Drop Kick specifically, the recent discussion I found suggests people are still talking about Kai-related move interactions in Pilgrammed, but the main unlock is still the Kai fighting style from Kai Guy.

TL;DR

You get Kai by finding Kai Guy, beating his fight, then speaking to him again to unlock the style.