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