Trine 4: The Nightmare Prince

Story-related and cannot be missed.

This trophy unlocks once you've completed all levels in the game and beat the final boss in the level titled The Nightmare Prince. See below for details or watch the video:

This boss can really be a pain and a challenge even though he only has 2 attacks. For the first portion of the fight, he'll target a white beam at you that, if it touches you, will freeze you & slow you down to the point of not being able to get out of it. The only way to escape it is to use that character's ability (i.e. using charge for Pontius, roll for Zoya and blink for Amadeus), assuming you have purchased them by now. The beam is preceded by a purple line that will show you exactly where the beam will start so you need to quickly use those couple seconds to try to position yourself as close to him as possible so that you can quickly hit him out of it. Once you get a couple hits, his beam will cancel then he'll teleport and repeat.

Basically the entire fight is you just getting a few hits at a time until he dies. Even in the next portion, where he adds a second attack. A similar purple line will now also show you where he is going to fly. Because of the large purple immune shield, his hitbox is fairly large so if you are anywhere in that section of the map, you will be hit and likely killed. Generally the idea is to move to a different level, but personally I found just blinking/charging through at the exact moment to be much, much easier.