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