Full list of all 55 Enter the Gungeon trophies - 40 bronze, 12 silver, 2 gold and 1 platinum.
The base game contains 49 trophies, and there are 2 DLC packs containing 6 trophies.
Acquire All Other Trophies
Complete Frifle's Challenges
Ace Winchester's game 3 times
Complete the game with the Sorceress's Enchanted Gun
Kill 100 enemies by dropping chandeliers
Kill 100 enemies while riding in a mine cart
Steal 10 things
Populate the Breach
Unlock the Bullet
Kill a Jammed Boss
Clear the First Chamber 50 Times
You've met with a terrible fate, haven't you
Complete the game with Beast Mode on
Clear the Sixth Chamber
Accessed the Hidden Market
Clear the Fifth Chamber 10 Times
Clear the Second Chamber 40 Times
Clear the Third Chamber 30 Times
Open the shortcut to the Fifth Chamber
Unlock the Robot
Map the first Five Chambers for the lost adventurer
Clear the Fourth Chamber 20 Times
Open the shortcut to the Fourth Chamber
Complete all 4 main character Pasts
Kill the Marine's Past
Carry a large amount of money at once
Kill the Convict's Past
Kill the Hunter's Past
Open the shortcut to the Third Chamber
Access the Temple
Kill the Pilot's Past
Collect five Master Rounds in one run
Die in the Past
Win a wager against the Gunsling King 5 times
Deliver the Golem's replacement arm
Get the jump on a Mimic
Kill 100 enemies by knocking them into pits
Construct the Bullet that can kill the Past
Fall at the last second
Avenge Manuel
Always be flipping. Guns are for flippers
Open the shortcut to the Second Chamber
Kill a frozen enemy by rolling into it
Why
Spend big at the Acquisitions Department
Defeat the Boss of the Fifth Chamber
Kill a boss after covering it with glitter
Access the Oubliette
Complete the Tutorial
Complete Daisuke's trial
Kill the Bullet's Past
Kill the Robot's Past
Defeat an Advanced Boss
Complete Tonic's Challenge
Take Revenge