Here is the full list of all 22 The Order: 1886 trophies - there are 14 silver, 7 gold and 1 platinum.
Kill 75 enemies with pistols
Kill 7 enemies with silent takedowns
Incinerate 15 enemies
Kill 10 Lycans
Stun an enemy 30 times with the M2 ‘Falchion'
Kill 25 enemies without aiming
Detonate 10 powder kegs
Kill 15 enemies with melee attacks
Kill 3 enemies with a single explosion
Kill 25 enemies during Blacksight
Kill 5 enemies with a headshot during Blacksight
Shoot an airborne grenade during Blacksight
Collect all Trophies
Complete the game (any difficulty)
Kill an enemy with every weapon
Kill 40 enemies with science weapons
Kill 100 enemies with a headshot
Find all inspect items
Collect all phonograph cylinders
Inspect all newspapers
Inspect all photographs and documents
Inspect all objects