Thanks for the guide.
All I have left to do is movies 2 3 and 4 getting all minikits and compass parts then the bonus level. Down to the last 3 achievements (sail minikits, all gold, and 100%)
GOOD GUIDE! Especially the seabed trick.
ALSO if anyone is having problems finding the last few characters try going into the bar area on the left of the hub where you can watch the credits and cutscenes. Found my last 3 characters there and unlocked 75G worth of achievements in about 10 seconds. If they aren't letting you buy them hit them a couple times and then you can buy them.