This achievement require you to play a challenge each day for a total 13 days streak to unlock it,
"BUT"
I figured out an easy method to speed up the days, and get this achievement in less than 15 to 20 mins max.
(First) You need to go to "Settings" then "System" then "Time".
(Second) Change the date like a day before or after, for example my date was set on "Mountain time (US & Canada)" and the date was September 12, So I switched the time to "International Date line west" and the date changed into September 11, Once you see the date is changed start the game.
(Third) After starting the game go to "Daily Death" and you should be able to unlock the second day challenge, do it and once you finish it make sure you got the challenge marked and done after that quit the game and again change the date for a day before or after, For me I switched the date back to "Mountain time (US & Canada)" and the date changed into September 12 I started the game and played "Daily Death" and the 3rd day challenge unlocked.
Just keep going back and forth by changing the date a day before or after and do the challenge for each different date, and make sure you get the challenge done and marked before quitting the game, and repeat the process until you finish all the challenges, By finishing the 13th challenge this achievement will unlock.
I hope this guide helps and happy hunting
