Here is the full list of all 42 Hidden Agenda trophies - there are 21 bronze, 18 silver, 2 gold and 1 platinum.
Becky swears at her partner
Foil a Hidden Agenda
Unanimously identify who has the Hidden Agenda
Win a Hidden Agenda
The investigation hits a deadend
Becky shoots Judge Vanstone
Becky tells Finn about Calvary's murder
Becky uncovers Adam's backstory
Felicity convinces Judge Vanstone to release Finn
Complete the game without ever using a weapon
Complete Story Mode
Simon is revealed as the Trapper
Becky catches a prowler in the cabin
Becky finds the spycam
Becky links the hooker to two previous murders
Becky finds Father Rominski's "Play Room"
Takeover a takeover
Find every clue in a single search
Don't shoot during a combat event
Succeed on a Quick Time Event
Make your first choice
Unanimously agree on a Trust question
Earn all other trophies
Becky is drugged
Becky's partner helps her escape the cops
Felicity tricks the killer into an ambush
Vernon LeMay falls to his death
Felicity breaks into Simon's residence
Finn escapes from police custody
Finn leads Becky to Adam
Finn teams up with Adam
Becky dies in an explosion
Becky defuses a bomb
Becky murders her sergeant
The Trapper is arrested
The Trapper dies
Daniella Cárdenas identifies the Trapper
Felicity burns to death
Becky and Felicity both die
The Trapper tries to commit suicide
Complete Competitive Mode
Complete an Endgame Agenda