Some people say level 2-2 is impossible to beat, but it's actually really easy. Just make sure you have Wiccan's bubblehead spell ready and Hulking's mer-form equipped and you can cruise right past the enemy jellyfish with no problem. It helps if you max their hearts early like I had when I took this screenshot. If you're short on love, there are hidden hearts in some of the statues, but you shouldn't need them.

Protip:Finish the level with the final digit of the timer displaying 5, 7, or 9 and Wiccan and Hulking will kiss, earning you triple bonus points.