Chapter 2
Enchanted Forest
Trial: Finish the level after killing 30 Goblins with their own grenades
You will reach a section where you have to use the goblin's bombs to blow up a door, simply use RT or U to grab a goblin and press Up on the Left Thumb Stick + X on a controller or W + J on the keyboard during the QTE. He will light the bomb on their body, toss them, they will run and blow up. Repeat this 30 times.
Underground Caves
Trial: Finish the level after killing at least 10 enemies while poisoned by Spider venom
On the 2nd spider fight, with the Lycans, I found it easiest to attack the spider up close and eventually it would grapple you on the ground. You will prompted to quickly tap a button or key to escape, instead do nothing and the Spider will poison you. Use Grapple on all the Lesser Lycans and kill them with the QTE for an easy 8 kills. The last two kill can be Two of the 3 spiders you will face in the level. Get their health low so that you will stun them in a few shots then repeat the steps above to get poisoned. If you are low on health there is a health statue in the area left of the area where you need to throw bombs at a door to get the key off the body. You can go back and the spider will be there. Wait long enough and the Lesser Lycans will also respawn.
Labyrinth Entrance
Trial: Finish the level after killing at least 5 Warthogs
At the beginning of the level, as long as you do not break down the door with the Warthog, it will spawn infinitely. Kill 4 Warthogs. You can break down the door with your 5th Warthog and finish the trial by strangling it.
Waterfalls of Agharta
Trial: Finish the level after killing at least 20 Small Trolls while you are mounted on a big one
When you mount the Big Troll, do not destroy the rock. Small Trolls will spawn infinitely until the rock is broken. Kill 20.
Agharta
Trial: Finish the level without using Shadow Magic energy
Pretty straight forward. Dont use the RB or E during the level(Make yourself glow Red)
Dark Dungeon
Trial: Finish the level without using a grip attack against a single Gremlin
Do not grab or use your weapon to grab Gremlins with RT or U key. Kill them with your regular attacks or combos. If you have issues with this, come back when you unlocked Holy Water. Throwing the Holy Water instantly kills Gremlins in the AoE.
Sanctuary Entrance
Trial: Finish the level after absorbing 20 Neutral Elemental Orbs simultaneously
This one can be a bit tricky and relies on your ability to not get hit to take advantage of the neutral orb meter. There are two good spots to get this. When you are collecting the Dark Crystal, there is a section where you need fight 3 Lycans. I completed this here by using my block and counter attacks on the Lycans and absorbing all the neutral orbs when I had a chance. I think I had to kill one or two before I was able to.
If you arent as adept at block countering there is also a section with a cave troll. Just keep attacking and dont get hit so that you get the meter full so all attacks cause Orbs to be released, once you see a ton of obs kille the troll and absorb them all.
Sanctuary of Titans
Trial: Finish the level and defeat the Stone Idol Titan in less than 2 minutes
Use the Dark Crystal immediately to reduce the runes to 1 hit much like the Ice Titan. Timer starts after the cut scene when you throw the rock back at her. Use the same ledge leaps before on the longer ledges to save time. You will need to climb up the leg and then at the top of the leg grapple to her opposite thigh where the 1st rune lies. After rune 1, climb down quickly to avoid her hand and grapple it. After rune 2, climb down to avoid her hand and grapple again. Now she'll punch the ground and knock you off, that's normal, quickly grapple back on. After rune 3, climb straight up up to avoid her hand. Grapple to the rock then her face, climb her face and hit her final rune. There is a QTE after the final rune so make sure to hit that or else you will fail.
Much like the Ice Titan, Autosaves do not work in your favor. This one is even tougher then the Ice Titan. It will take some time to complete.
The Black Knight
Trial: Finish the level and defeat the Black Knight Golem without using Light Magic energy
Do not use LB or Q to activate Light magic (Glow Blue). He is a fairly easy boss to beat. Just attack and dodge for the most part. Learn his movements as he will pund the ground from time to time in which case you need to jump. He will also summon puddles of black goo that will trap you. These can be destroyed with power moves(ex holding X for controller or J for keyboard)