JJ/World 2

This icy world has the turrets and eyes from the last world, along with two additions; Skeletons and Bricks. The Skeletons behave like Eyes, but they are faster. The Bricks will not kill you. They simply prevent you from running until you shake them off. To do that, run left or right until they release JJ. There are Flying Bricks too, who jump simultaneously with you. There is a new type of electric turret as well. They can increase their height, so even your higher jumps will be blocked by them on occasion.

Stage 1
There are many gaps from the start. Time your jumps so that you still have some time to press the jump button again when you land. Otherwise, you'll slip off the edge.

Stage 2
The enemies increase, and now the Eyes will chase you even after you've passed them, so jump quickly when they pursue you. Stay mindful of the gaps. Bricks and Flying Bricks appear here, and they will be a nuisance until you become more familiar with them. If you grab you, jiggle the direction pad left and right until they release you. You can also find a bonus jetpack here.

Stage 3
Eletric turrets will grow higher and will even appear on the borders of the gaps. Be prepared to avoid them as you fall from a jump.

Boss
Aside from a slight change in appearance, the second boss is exactly like the first one. However, you will have to defeat two of them before you can advance to the next world. Focus your attack on his head and you'll finish each one off much faster.