Shadow Warrior 3: Definitive Edition

Load up the chapter 'Way to Motoko'

The first 2 'arenas' have spikes which you can easily push multiple enemies on by pressing

You can kill yourself by jumping off the side before everything dies, respawn and repeat until you have 50 kills. *update after various comments stating that you can restart checkpoint & keep your kills

Hope this helps

Hey guys, to throw an enemy on the spikes you need to use the Chi explosion clicking RS, to be more efficient try to upgrade it to at least level 2, almost every part of battles have spikes, so just try to find and throw the enemies on it.

This achievement starts counting from very start of the game (game will prompt you for using chi on enemy near spikes).

Chapter 2 - Way to Matoko has two arena, you can complete in either one of these. I recommend the arena where challenges unlock. Complete this here while doing other challenges just to get it done.

Timestamps in the video:
00:29:55 - Challenges are open here (Arena)

I completed some achievements and challenges here:

00:34:55 - 'Run-And-Gun' Challenge complete
00:35:15 - "Surgeon" Achievement
00:36:30 - "Don't come closer" Achievement
00:38:10 - 'Bullseye' Challenge complete
00:40:35 - 'Multi-Tasking' Challenge complete
00:44:25 - 'Face-2-Face' Challenge complete
00:49:35 - "Acupuncture" Achievement

This is 100% complete guide for all achievements and challenges.
(All timestamps are in YouTube comment)