Rainbow Islands/Islands 1 - 4

Island 1: Insect Island
You begin your adventure on Insect Island. The enemies on Insect Island often begin by minding their own business until they've been on the screen long enough to get angry at you. This gives you plenty of time to set them up in just the right way so that you can crush them with rainbows and earn small diamonds from them. Attack as many enemies as you can in order to powerup your rainbow creation abilities quickly.

Boss: Spider
Like it's smaller brethren, the giant spider will bounce around, to the left and to the right, in an effort to get closer to Bubblun or Bobblun. It will try to land where you are standing, so be sure to move out of the way once it leaves the ground. You can attack it with rainbows by standing next to where it will land. But you will do much more damage if you manage to crush it with rainbows instead.

Island 2: Combat Island
You probably won't find Combat Island to be a huge increase in difficulty over Insect Island. However, do expect enemies to be a bit more aggressive, and fire projectiles at you. It's still relatively easy to plan your effort to collect the small diamonds in order, but you can't waste as much time as you could on the first island. There are also stretches where it is impossible to jump and reach the next platform without using your rainbows to advance higher first.

Boss: Helicopter
The giant helicopter will behave very similarly to it's smaller cousins, flying back and forth while occasionally changing altitude. It particularly likes to drop down to whatever level Bubblun is at. However, this helicopter borrows a talent from the bombers, and drops a steady stream of bombs down to the ground while it flies around. Crushing it with rainbows will kill it faster, so try to lure it to the bottom of the screen, and then jump up to the top and drop rainbows on it as quickly as possible.