Levels covered:
0:01 Watery Grave (secret/good exit): Up until 43 seconds in, we repeat hat we did before. Now, in the water room, swim left until you find a P-Switch, which you have to carry with you. Use it in the next/first room near the first blocked off pipe to access the vertical shaft. Climb up that and you should be fine.
2:28 First Iceberg: There was originally going to be a black iceberg in World 6. Now, it just gives you a false impression. Simple level after all the stuff in Watery Grave. The last Dragon Coin in here, not so much. It's all abut knowing where you'll land until it gets easy.
4:32 Sunken Castle: This castle tries a whole lot of different techniques, from generic level to moving platforms, to darkness, to skull raft. It shouldn't be too hard to conquer them all and finish off World 2.
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