Here is the full list of all 21 Randal's Monday (EU) trophies - there are 21 bronze.
Hit the “kill kitty” button XX times
Unlock the hints system
Beat the game without using the hints system
Beat the whole game
Beat the final conversation choosing only the correct answers
Feed the Horsemen
Complete episode 6
You made a complete scarecrow
Beat the hot plate puzzle on your first try
Tell Bogs the password
Complete episode 5
Complete episode 4
You didn’t fail any question in HAL’s game
Complete episode 3
Beat the puzzle of the drawers and the books on your first try.
Complete episode 2
Beat the puzzle of the Sci-Fi Con sign without the bum’s help
Feed the pigeons three times
Complete episode 1
Sell the ring
Complete the prologue