Here is the full list of all 35 Struggling achievements.
Escape the rat swarm.
Collect 3 hats.
Make the scientist in need fall.
Die for the first time.
Collect your first hat.
Collect 10 hats.
Collect 15 hats.
Collect 20 hats.
Collect 30 hats.
Collect 38 hats.
Collect all the hats.
Create an arm circle.
Start a second playthrough.
Listen to the water theme song.
Complete the campaign without dying once.
Get bitten by three rats at the same time.
Destroy the elevator.
Tell the dancers about your new mixtape.
Carefully pass the pod room.
Get to the abandoned meeting room.
Cure Amadeus.
Fully damage Amadeus.
Steal the Rat King's crown.
Only use one plug to get to Amadeus.
Escape the acid flooding cave.
Reach the secret tanning spot.
Date Paris.
Date Pandora.
Date Ulysses.
Date Patroclus.
Date each of Agamemnus' Heads
Open the door of the secret tomb.
Push your luck in the saloon.
Escape the crashing plane.
Get baited, son.