Here is the full list of all 38 Hunt: Showdown trophies - there are 20 bronze, 13 silver, 4 gold and 1 platinum.
Collect all other Hunt: Showdown trophies
Kill 100 enemy Hunters with headshots.
Close 250 rifts in Quickplay matches.
Kill an enemy Hunter with a sledgehammer throw.
Retire 25 Hunters.
Burn 50 chicken coops.
Break 50 doors.
Kill 50 contract targets solo.
Kill 150 Grunts with the dusters.
Have 5 level 50 Hunters at the same time.
Visit every Stillwater Bayou location in one mission.
Visit every Lawson Delta location in one mission.
Complete seven Challenges.
Absorb at least 250 energy from the Wellspring in a Quickplay match.
Kill a contract target with a melee attack.
Have 15 traits on a Hunter at the same time.
Unlock 25 entries in the Book of Monsters.
Unlock Bloodline rank 100.
Complete 100 Bounty Hunt contracts.
Recruit 100 Hunters.
Survive a Quickplay match.
Be the last Hunter standing in a Quickplay match.
Be the first to activate the Wellspring in a Quickplay match.
Hide in a toilet.
Investigate 250 clues.
Play the gramophone and the piano in one mission.
Locate a contract target without investigating any clue.
Unlock Bloodline Tier 3.
Get a Hunter to level 50.
Unlock 50 entries in the Book of Weapons.
Be on fire, get poisoned and bleed at the same time.
Kill 150 monsters with headshots.
Unlock Bloodline Tier 2.
Complete Trainee Mode.
Complete your first Bounty Hunt contract.
Kill an Immolator without making them explode.
Complete a Challenge.
Kill your first enemy Hunter.