The Three Towers
Trial: Complete the level after killing 15 enemies dazed by fairies.
You will come to a section where there is a big steel door blocking your way and you are ambushed by Lesser Lycans. Fight off the Lycans until you see some green fairies floating around. At this point stop killing the Lycans unless they have the green fairy or green sparkles around them. There should be 16 of them here so theres plenty to achieve this. If you do not complete it here, there are more sections with enemies, you will just need to use your own fairies for those.
The Dark Lord of the Lycans
Trial: Complete the level after defeating the Lord of the Lycans without using Light Magic.
Much like the previous trial, during the level, do not use the LB on a controller or Q on keyboard to activate Light Magic.