The Ender Dragon is a boss in Minecraft, not a Terraria boss. The first step involves closing Terraria.

Owning Minecraft is essential for this guide. Open the game and load into a singeplayer world. It's pretty simple, I know you can do it.

This is essential as well. Speedrun to The End dimension as soon as possible. Find the stronghold and enter the End Portal. The world is counting on you.

Alright, you're here. By now you should have full protection 4 netherite armor and 2, yes 2, sharpness 5 netherite swords. A bow is also optimal for destroying the annoying healing crystals. Now you're ready to slay the beast. It's stabbing time. Before you stab though, you must shoot the End Crystals and make them go B O O M. Once they're all destroyed, stab the Ender Dragon until it screams so loud that it explodes. Then, jump into the portal back to the overlord and let the credits roll. You've done it, Minecrafter.