Bones Forest
Trial: Finish the level after killing 10 headless Corpses without being grabbed once
Title is misleading. You have to kill 10 in a row without being grabbed. Unfortunately I dont really think that matters as there is only 12 of the corpses in the level unless they respawn. Its fairly easy anyways. Destroy the heads while rolling around. When they come up attack and grapple to kill them. You can stun a bunch if you throw holy water.
Woes Moor
Trial: Finish the level and get the three keys, scaring Crows only 13 times.
Scare Flock 1 two times to fight Scarecrow #1. Scare Flock 1 again to bring out Flock 2. Scare Flock 1 to put them back. Scare Flock 2 to bring them down, continue to scare Flock 2 until you fight scarecrow #2. Scare Flock 2 two more times. Head South of Scarcrow #3 to fin a neutral Orb fountain and a wooden structure that can be grappled. Break it to bring out Flock 3 and scare them two times to activate the last scarecrow.
The Music Box
Trial: Finish the level and get the blue rose without falling in any of the music box's traps
Actually fairly easy. You just need to get through the level without failing at any traps. I was able to accomplish this on my first try. Best tip I can give it to not rush. Everything has a pattern. Let the 1st on go, collect yourself and then go through.
Green: Spikes - Spikes will disappear, walk up and stand there and wait for them to pop out again. As soon as they withdraw again bolt across
Red: Platforms - This one is all about timing. Platform #1 pops out at 11 seconds, Platform #2 at 7 seconds and platform #3 at 3 seconds
Purple: Saw - Simply Roll through
Yellow: Fire - This one is the hardest of them all. Walk up and watch the pattern of the fire. When the fire disappears the second time Shadow magic rush through it. Again stop on the spike platform and collect youself watching the first pattern sequence as soon as the fire reappears then disappears us the the Shadow Magic Rush move again.
Blue: Electricity - As with the others let the first sequence go through watch how it works. When the first wall disappears, move up one spot, wait for the next wall to disappear and then move up again. Rinse and repeat. Second one watch the first wall, once it disappears run through.