Outer Wall
Trial: Finish the level after killing 10 Gremlins with just your silver daggers
This one is a little tough especially on the higher levels. After completing the puzzl you will head down the chain link to a secluded little area. This is where the red bastards will appear. The Silver dagger doesnt actually kill them in one hit which is what made it a little difficult. I found that the easiest way to do this was to activate Shadow magic and then toss the Daggers. It killed each Gremlin instantly and there is only 10 of them.
The Clockwork Tower
Trial: Finish the level and get to the top Corridor in less than 5 minutes.
This shouldnt be too hard but requires some skill to finesse through this level. I was able to finish with 7 seconds left. The level isnt that long. Most of it is just platforming, the parts I struggled with was the electricity bit. Unfortunately the AutoSave doesnt pop at the most opportune times. It basically starts when you arive at the 2nd floor. So you have to traverse up until that timed electricity bit if you restart. Other than that there is a fight with the Monstrosity again. Fight isnt too difficult, just eats away at your time. I think the QTE starts at 50% health. After that quickly turn the crowbar and get on the platform to end the level
Olrox
Trial: Finish the level after keeping the focus meter at its maximum for 60 seconds
This one sounds more difficult than it is. Olrox is pretty predictable. He has 4 moves that seem to be common. He will disappear and reappear with twon consecutive swipes, he will swipe twice with his blade, he will toss both his blades at you or grab you if you are too close. Simplest thing you can do is try to land the Guillotine with its upgrade. Doing that pretty much gets the Focus bar to 75% Once you get it full you will need to combine evading and dodging with attacking as the Focus bar will deplete after approximately 8 seconds of not hitting an enemy. Just roll around dodging his attacks and throw in a light attack when he is open. His openings are typically after his 2nd swipe and while he waits for his blades to come back to him.
The Throne Room
Trial: Finish the level and defeat the Dark Lord After she kills 10 of her own Warriors.
This one is quite easy as well. Fight with the Dark Lord starts off with her in a blue shield and a bunch of Vampire soldiers. You can attack these guys with light magic to heal but do not kill any of them or else you will need to reload your checkpoint. Basically she will lower down and shoot lightning out of her hands. You want to have her kill her minions with that. Unfortunately it only seems to kill them if it hits at their feet so try to be close to her but also in front of the Vampire soldiers. After she kills all 10 a cut scene will trigger and you just have to finish the fight.