DO NOT READ THIS GUIDE IF YOU HAVE NOT GOTTEN TO THE END OF THE GAME!!!!

Proceed if you're at the end or are okay with spoilers.

Okay, the guide will actually start now.

We're gonna assume that you have made a few attempts fighting The End but you're struggling, died a couple of times, and don't want to read the tips the game has to offer.
Don't worry, as I will give you two helpful tips that I wish I had known before I fought that darn moon.

Probably the most important tip I have out of the two.
Yes, you can absorb The End's attack depending on whether you're shooting Light Shots or Dark Shots.
For example, The End is shooting white orbs, then you shoot Lights Shots to protect yourself and absorb them.
This tip will be a lifesaver in some situations, so keep this one in mind.

Example of absorbing The End's attacks.[imgur.com] (Credit: TYSunny)

I highly recommend you save up your homing missiles (the bottom bar) for when there is too much going on screen.
Basically, treat it as a screen wipe instead of using it for damage.
Trust me, you're better off just continuously shooting for damage than wasting your homing missiles.

Example of using Homing Missiles to clear projectiles.[imgur.com] (Credit: TYSunny)

Those are the two main tips that I wanted to share with others.
Hopefully, this helps you or you can share it with somebody who is struggling with this boss.
Remember to memorize the patterns to make the fight easier to manage, hold that shoot button, and good luck! (Or maybe you already beat the boss and just wanted to read this lol)

If you have any other tips to share for this boss, then feel free to say them. I might add them in the future.