On top of that from xingwang's blog

This week's challenges for the free tier involve searching for seven chests in Junk Junction and eliminating three opponents in a single match. On top of that, you'll need to  Fortnite Items use three Rift Portals. Since Rift Portals appear randomly, this one is going to involve spending some time running around searching for them, so we recommend getting on with the other challenges but keeping an eye out for rifts.

For Battle Pass-exclusive challenges, you'll have to deal 300 damage with a Clinger, Stink Bomb, or Grenade; hit a golf ball from tee to green on five different holes; and eliminate three opponents in Shifty Shafts. As with previous weeks, the trickiest of the bunch involves following a treasure map, which this time can be found in Snobby Shores.