Doing the impossible in Terraria ─ killing enemies with ∞ health..? (it isn't...)

Описание: Terraria is full of enemies: Green slimes, zombies, goblins, blue slimes, bones, and pink slimes. Enter more slimes here, if you wish. But hey, you can defeat them with your guns and stuffs. But some of the enemies cannot be defeated normally... You'd need some kind of cheats to defeat them, so you can turn golem into a complete derp!... say, there are lot of "invincible enemies", which cannot be harmed... until now.

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Chapters
0:00 They maxed out their defense, because they don't want to get hurt
1:47 Destroying the Indestructible
3:32 Breaking the game
6:20 Breaking the seal
9:54 Ending the video
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[Outro/Custom song]
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Most of the musics used on this video was either taken from video game, or copyright-free musics from Youtube Audio Library. The name of the musics will be mentioned down below.
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invisible invincibility
Used Music:
-Terraria dungeon
-Terraria overhaul: Morning rain
-Terraria calamity: wasteland
-Terraria otherworld: The endless void
-Terraria pirate invasion
-Terraria golem
-Terraria calamity: return to slime
-Terraria old one's army
-Terraria calamity: cosmic disgust
-Terraria corruption
-[outro]
-[another outro]
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I hope you have a great day, as always!
Thanks for watching, I guess.