After exiting the starting cave, you’ll see big birds dropping Bob-ombs as well as a Shy Guy riding an ostrich. Enter the building where you’ll see Ninjis and Sparks in the starting hall. Enter the door on the platform and ascend by pipes releasing Shy Guys. Go to the top to enter the card key room. Go back to the beginning hall with the card key and unlock the door. Ascend in a room full of Sparks on platforms and use the next door to ascend by some Goombas. Climb the chains by 2 Pansers and enter the next door by a Snifit. The next room has even more Sparks and dodging them can be tricky. You’ll find a POW Block after picking up a vegetable to get rid of the Sparks so you can ascend easier. Climb the ladder and find the door to the top of the tower. After 5 Ninjis, grab the jewel to open the Mask Gate. In the boss room, you’ll battle Mouser again. Throw bombs to attack Mouser, and, after 5 hits, the door to the next world will appear.<br />...<br /><a href="https://www.youtube.com/watch?v=MBYfBiszVbA" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=MBYfBiszVbA</a>