03 Apr 2018 03 Apr 2018
play solo & co-op >
press X to filter >
category > switch to featured
select "Upside down - JOURNEY" - as of writing this guide it can be found in middle of the bottom row
there is no enemies to kill, all you have to do is run through the levels, very easy and should be completable in less than a minute.
rinse and repeat another 9 times and the achievement is yours.