Game Changers Challenge 606???

FTC, do a search for "Game Changer" and you should find the posts from last week. Also, I'd recommend visiting/searching on r/CollegeUltimateTeam, which is where I've found the most helpful hints/answers every week when a new set silly challenges drops and people crowdsource their way through the foolishness.

In a related note, there's currently more than 330 views on this thread after 9 hours, which should tell EA how many users are in need of guidance to figure out a way to waste less time/energy on figuring out what specific hoop has to be jumped through in what particular way for something like this.

Do you know what game changers 503 is?

It requires a hit stick but the player has to be past the line of scrimmage. So you have to stuff them (and get tackles) on the first two plays and then let someone get some yards -- either a hit stick past the line or enough for a first down to give you additional chances.

Every single one of the Game Changer challengers are massively annoying, put together by people who don't really like football. This is just one more example.