Super Chicken Jumper (EP)

I found this easiest with the jetpack and the pistol. Most of her attacks are fairly easy to dodge, just make sure you stay towards the centre of the screen as she likes to attack with spikes from the back of the screen, and then hit you with her wind attack. If she does this, use your jetpack to fly up as her attack is brutal, but quick so you can basically jump out of the way if high enough. Continue shooting her until she falls.