Here is the full list of all 40 Until Dawn: Rush of Blood trophies - there are 21 bronze, 16 silver, 2 gold and 1 platinum.
Collect all trophies
Finish the story on Psychotic
Collect all the skittles
Finish 'Final Inferno' on Insane
Finish the story on any difficulty
Finish 'Final Inferno'
See all the 'Moment of sanity' sequences
Finish 'Mines of Death'
Finish 'Mines of Death' on Insane
Finish 'Ghost Town' on Insane
Finish 'Ghost Town'
Have picked up all weapons
Die from spider venom
Finish 'Psycho Cellblock' on Insane
Kill 20 enemies with barrels
Complete a level using only pistols
Finish 'Psycho Cellblock'
Dual wield Machine Pistols
Hit three targets with one shot from the Revolver
Dual wield Revolvers
Complete a level using only one hand
Die from hitting head on a barrier
Finish 'Hotel Hell'
Finish 'Hotel Hell' on Insane
Get 100 headshots
Blast off 100 limbs
Finish 'Nightmare Descent' on Insane
Finish 'Nightmare Descent'
Hit three or more targets with a blast from the shotgun
Get killed by a sawblade
Dual wield Shotguns
Beat a previous set score on a level
Collect all the skittles in one level
Get > 80% accuracy on a level
Finish 'Haunted Lodge' on Insane
Reach multiplier x8
Finish 'Haunted Lodge'
Pick up a new weapon
Shoot all the moving ducks in 'Haunted Lodge'
Reach multiplier x4