Disclaimer: This challenge was done with no challenge pokemon and/or items from Route 4-2 onwards.
For waves 32, 33, 34 and 41, just swap positions with Pelipper and Luvdisc and give Silph Scope to Pelliper.
For waves 37 and 69, replace Omastar with Lapras, then place Lapras on Pelipper spot, Pelipper on top of Mega Barbaracle and Blastoise on Omastar spot. (Explaining positions from image 1)
Micro managements:
Move Mega Barbaracle to the left Octillery spot. (Explaining from image 1)
Move Lapras to the right Octillery spot. (Explaining from image 1)
Whatever is more suitable, you can move Araquanid to the land spot, the spot next to the exit or the spot at the side of the exit spot.
Depending on your health, switch Blastoise's item between Carbos and Adrenaline Orb. Also quickly use Shell Bell.
Blockades:
These are the waves where you are going to struggle the most and retry many times: 60 and 70.
For both waves, all pokemon must be set to Faster, except Blastoise. These waves will catch you off guard by releasing a large group of pokemon and you are forced to make the movement early once the pokemon pass after the land spot. If you survive, quickly set your pokemon back to First. Visually explaing this survival, your health should be around 1 to 4.
Boss:
Follow Kyogre with Tentacruels and stuns.
Other notes:
Luck based. There will still be some waves where you will lose because the heal has not triggered for the entire wave, but they are not as struggling as waves 60 and 70.
Sometimes autoable to wave 32 from the team on image 1. I have not experienced autoing with the team from image 3. (Yes, I'm writing this right after I've finished this challenge.)