How do you get Over-Overkill in Minecraft?

Craft a mace: a heavy core from an ominous vault plus a breeze rod.

What kind of advancement is Over-Overkill?

Over-Overkill is a Adventure tab advancement in Java Edition, of challenge type, rewarding 50XP experience.

Over-Overkill

Tab: AdventureChallengeReward: 50XPDifficulty: Hard

Quick answer: Deal 50 hearts of damage in a single hit using the Mace

Tree path: Adventure › Minecraft: Trial(s) Edition › Over-Overkill (advancements are independent: they can be completed in any order; the tree only guides progression)

Tree parent: Minecraft: Trial(s) Edition

Advancements are exclusive to Java Edition. The Bedrock Edition equivalent is achievements, which have different objectives.

How to get Over-Overkill

Craft a mace: a heavy core from an ominous vault plus a breeze rod.
Understand the smash: mace damage scales with your fall distance before impact, with no cap.
Set up the hit: launch yourself with a wind charge (see Who Needs Rockets?) or build a tall drop, then strike a mob on the way down.
Land 50 hearts of damage in a single hit. Any mob counts, even one with far less health. The advancement pays 50 XP.

Tips

The Density enchantment adds damage per fallen block and is far better for this than Breach. A wind charge jump plus a short tower gives enough height for the 50 hearts on most setups.

More guides from this tab (Adventure): Adventure Heart Transplanter Voluntary Exile Country Lode, Take Me Home Is It a Bird?Monster Hunter