Below is what I’ve posted to the Halo Support website, I wanted to get some discussion here though.
The wording for the Chef’s Kiss challenge is not worded well for understanding what the intended challenge is, or what guns are supposed to be used for it. Plus the challenge seems to difficult for the majority of the player base to do, which will cause a problem with people not being able to get to the ultimate challenges in the weekly challenges.
I’ve looked online for an answer, and the only source available I can find is a Reddit thread that states the challenge means “Get a perfect kill with a commando or battle rifle”. But I have no way of knowing what a perfect kill is, or whether these are the correct guns.
And if this is the correct interpretation, getting a perfect kill on anyone with the weapons listed is too difficult of a challenge to do once, much less 3 times. The shields take too long to break, and the players are moving so fast, it feels like you need aimbot level aim to come close to completing this mission.
Since I posted this on November 18th, I did complete this challenge, but I did it with the Shock Rifle, which according to the challenge description doesn’t seem like it would fit the description of “Kill 3 enemy Spartans with a kinetic semi-auto or burst weapon with peak efficiency”. I certainly can’t do this with the weapons listed in the Reddit thread I mentioned.
(Edited to make sure the challenge description was clear at the bottom)