FFXI has such a thing, though only a test through of your skills and knowledge through "Limit Breaks." These start at level 50.
The most infamous Limit Break was the Maat fight.
https://ffxiclopedia.fandom.com/wiki/Shattering_Stars
You had no help and a short time window to defeat him. You had to know your job almost completely inside and out. This includes how and when to gear swap, which items to use, which food affects were best for the fight, which consumables you needed to use, etc.
Unlike what the wiki states now, back in the day, you only got one fight per Testimony. If you lost, you had to farm another one. Which took hours.
This Limit Break was brutal as some jobs had it way easier than others to beat. RDM is hands down the most difficult one due to the number of enhancing and enfeebling spells Maat has. I also witnessed my roommate do the Ranger one and that is complete feast or famine.
If you couldn't beat Maat, you couldn't do endgame, since you would never be able to go above level 70.