Here is the full list of all 21 Randal's Monday trophies - there are 21 bronze.
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
Beat the puzzle of the drawers and the books on your first try.
Beat the puzzle of the Sci-Fi Con sign without the bum’s help
Hit the “kill kitty” button XX times
Unlock the hints system
You didn’t fail any question in HAL’s game
Complete episode 3
Complete episode 2
Feed the pigeons three times
Complete episode 1
Sell the ring
Complete the prologue