Wario Land 4/Spoiled Rotten

The Boss of the Entry Passage is Spoiled Rotten.

Normal
This battle should be pretty easy. To start, dash at him in the face (avoid the eggplant warriors!) If you can, take out the eggplant warriors. Keep on dashing at him about 8-10 times, and he'll show a very scary face. When he does so, you can't take him out by the front. So, jump over him and dash at his back. He'll turn around, so dash his back again. After 3 hits, he'll be down for the count. You've got one minute, which is plenty of time.

Hard
Same strategy as normal, but you've only got 30 seconds this time. Hit him as quickly as you can and you should succeed.

Very Hard
The very hard version only gives you 15 seconds to beat her, so you must fight as quickly as possible! Also, when you start the battle, two little enemies appear, hindering your path. You must hit her 10 times. Also, when there are only 3 hits left, you must hit her from behind or she will bite you.