Hotel Transylvania 3: Monsters Overboard
25 Achievements
1,000
6-8h
Need a Holiday
Defeat the Dastardly Dragon and retrieve the final part of Neptune's Compass. Details for this achievement will be revealed once unlocked
100
1.76%
How to unlock the Need a Holiday achievement in Hotel Transylvania 3: Monsters Overboard - Definitive Guide
Drop down into the area of the boss and immeditaley run into one of the stepping stones to lift up a block in front of you, this will block the attack of the dragon. With his first attack he will start to breath fire where you are stood behind the block, he will then start to turn.
Immediately run around the block in front of you and throw a couple of you minions at the dragon and it will stun him. The moment he is stunned, send all of your minions to attack. If you have done this quick enough the dragons life bar will be drained before he can recover.
This will give you your final piece of the compass completing the story of the game. You can continue the level select after the game if you have missed any achievements.
Just drop in, trigger a rock, hide behind it, then once the Dragon starts turning go around the other side and launch all your little Frankies at him.
This is the boss fight on Island 3. Before you drop down for the fight, I recommend going to the Impa Portal and selecting all Frankenimpas. Wait behind the southernmost stone slab while standing on the pressure plate. The boss will breathe fire at you (but the stone slab will protect you). He will then start to rotate around with his fire breath. At this moment throw all of your Frankenimpas at him. Depending on how many you have (I had 30 and they killed him in one go) they will hurt or kill him. If he doesn't die, recall your Impas and repeat the process. Once the boss is defeated, you will obtain 3/3 of Neptune's Compass, complete the story and earn the trophy.
If you need help here is a video of all 3 boss fights, courtesy of rus199410: