Here is the full list of all 35 Fall Guys: Ultimate Knockout (2020) trophies - there are 21 bronze, 8 silver, 5 gold and 1 platinum.
Acquire all other trophies
Win 5 Episodes in a row
Unlock 50 cosmetic items from the store
Equip a legendary Body Colour, Pattern, Upper and Lower Costume piece
Reach lvl 40 fame during a season
Perform an emote just before coming first in a race round
Qualify from 500 rounds
Equip your first legendary customization item
Get first place in a racing round 20 times
Win 20 Episodes
Clock up 1 hour total time falling
Fall for at least 3 seconds before landing on your head
Unlock 10 cosmetic items from the store
Reach lvl 25 fame during a season
Win an Episode with a custom Punchline equipped
Win 7 Episodes
Equip a rare or legendary Body Colour, Pattern, Upper and Lower Costume piece
Equip an uncommon or better Body Colour, Pattern, Upper and Lower Costume piece
Get first place in a racing round 5 times
Qualify from 100 rounds
Reach lvl 10 fame during a season
Qualify after a round goes to overtime
Bump into other Fall Guys 1000 times in total
Get first place in a racing round
Win an Episode as part of a party of 3 or more players
Qualify from a round without falling over even once
Win your first Episode
Qualify from a team game with a score of 1
Qualify from your first round
Share a hug with a Fall Guy
Qualify from a racing round despite falling over more than 10 times
Knock someone over
Reach terminal velocity
Equip your first cosmetic item
Bump into 3 people while rolling on the ground before getting up