Sparklite

This is the boss of the third area of the game and by far one of the easiest in the game, especially in comparison to traversing the Acid Bog the first few times. You may want to just ignore most of this area of the map until you beat the boss and come back later to focus on exploring if you're finding yourself taking too much damage.

The boss will start by shooting out a bunch of green blobs, which are easily avoidable. He'll then rise out of the ground, exposing a red balloon, which is the thing you'll be attacking. A series of lasers will begin rotating around the boss and you should be able to get in some hits while you're avoiding the lasers but then an enemy on a jetpack will fly in and start attacking you. Ideally, he will overlap the boss, allowing you to attack both at the same time, otherwise quickly deal with the enemy before returning to the boss.

If you have a decent damage boost equipped, you won't need to repeat this cycle more than three times before the boss falls.