Tower of Undiscovered Mayhem

DETAILS
Tower of Undiscovered Mayhem is the first tower in game. The last floors of the tower are a bit rushed, causing difficulty spikes at the end. This tower has decent design and has a couple of people beating it.

This tower had gotten a nerf on Floor 10 at January 21, 2021 (depending on your timezone).

Unnerfed ToUM verification video: https://www.youtube.com/watch?v=gTlSMH6dHEQ

MUSIC
Floor 1-2: ???

Floor 3-4: Terraria Calamity Mod Music - "Scourge of The Universe" - Theme of Devourer of Gods

Floor 5: THE WORLD REVOLVING - Deltarune

Floor 6: Galeem | Super Smash Bros. Ultimate

Floor 7: The Binding of Isaac: Afterbirth+ OST Terminus

Floor 8-9: Pokemon Music: Ash-Greninja Theme

Floor 10: Gang-Plank Galleon | Super Smash Bros. Ultimate

Continuing on from this point
After beating this, you should go for Tower of Difference and Challenges.