Mech Mayhem

You can enter it by talking to President Biaron NPC in the middle of Undercity Map, who will allow you to challenge Mech Mayhem!

You can enter attempt to go inside Mech Mayhem 3 times a day by default. You can use a Mayhem Gem once a day to gain an additional 3 attempts to this tower.

Don't forget the daily quest at the President Biaron NPC before attempting this tower!

What is Mech Mayhem?

Mech Mayhem is a Tower Challenge centered to Act 9. You will face a series of buffed up monsters and a unique boss on each floors around Undercity. Conquering the last floor grants you an exclusive tower medal that you can use to redeem Mech Mayhem-related rewards that can help you progress further.

What can I get in Mech Mayhem?

For every completed floors, you are rewarded with Mayhem Coins that accumulates over time.
Upon completing floors, you are rewarded with Common Pouch for Floors 1-4 and 6-9
Mayhem Soul, and Epic Pouch is rewarded for completing Floor 5 and 10.
Upon completing Floor 10, you are rewarded with 1x Mayhem Medal as a reward.

Why should I complete Mech Mayhem?

The main selling point of Mech Mayhem is for you to retrieve common and rare A9 Materials, and Fairy-related items. This allows you to work on your Fairy Enchantments (Steam Drones) from +0 to +9.
Underground Conqueror title also provides you an increase in double Raidbox on raids when equipped.

Mech Mayhem Mechanics

Upon entering, Buff Peng's Blessings are removed.
You can only carry over buffs that was casted on you before entering Mech Mayhem.
All monsters should be killed to attempt the next floor.
Completing each floor provides you Coins and Pouches that serves a minor purpose in purchasing rewards.
Completing the last floor provides you a Medal that serves a major purpose in purchasing rewards.

Mech Mayhem Difficulty

There are two difficulties in Mech Mayhem that is introduced in the game:

Easy Mode

Grants Experience for each floor completion.
Allows you to use any Health Recovery Potions.
Monster's Health and Damage are reduced.
Normal Rewards provided for each floor.

Hard Mode

Double-Rewards Chance is increased by +50%.
Only Steam Health Potion is permitted to use for recovery.
Monster's Health and Damage are increased.
Each Floor has a unique debuff that reduces your resists, movement speed, and increases your cooldown. This debuff grows as you go higher floors.

Nightmare Mode

6 Entries are consumed upon entry.
No Experience granted for each floor completion.
Rewards obtained for each floor is 9x the usual floor drops.
Rewards obtained for each floor can no longer double drop .
Only Steam Health Potion is permitted to use for recovery.
Monster's Health and Damage are increased exponentially.
Each Floor has a nightmare-exclusive tower heavy debuff that cripples your resist, movement speed, and cooldown. This debuff no longer grows.