Day 6 Wednesday: PSYNCIN' IN THE CAPTaiN
In order to unlock this achievement as well as the hidden item for this Somnium level, do the following:
Stew: Taste
Police ID: Throw
Trash Can: Look Closer
Left Speaker: Listen
Adorabbit: Ugly...
Door: Knock
Date's Sofa: Sleep
Refrigerator: Lift
Pot of Stew: Turn Up (doesn't matter which one)
You'll get a brief cutscene and the achievement should unlock.
To find the hidden item for this Somium level, once the achievement unlocks, go to where Adorabbit originally was on top of the speaker and the object will be there instead.