Here is the full list of all 12 Horror Run trophies - there are 11 gold and 1 platinum.
Collect all trophies in game.
Run with boost.
Collect a coin while running.
Destroy an obstacle while running.
Defeat a mini boss while running.
Collect 2 coins while running.
Destroy 2 obstacles while running.
Run for 1 minute.
Collect 3 coins while running.
Destroy 3 obstacles while running.
Complete a level in game.
Complete a level in game without getting hurt.