Moon Cleaver

#Overview

Moon Cleaver is the evolution of Mezzaluna. Get Mezzaluna to level 8 while you own Rotten Spud, then open a chest.

Every 1.15 s it chops 3 times (2 plus Tibo's built-in +1 amount, see Stats), 0.1 s apart: in front, behind, then in front again, one row lower. Each chop deals 120 damage to every pest in an 84 × 40 box (62 × 30 × its 1.35 Area). Like Mezzaluna it hits harder the more HP Tibo is missing, but with a bigger bonus: 0.8× at full HP, 1.7× at half HP, up to 2.6× near 0 HP. The rear chop also flicks 4 hash shreds backwards, each dealing 0.4× damage.

#How it works

• Low-HP bonus. The multiplier is 0.8 + (1.6 + 0.2) × missing HP fraction (lowHpBonus 1.6). See Stats for the shared formula.^[1]
• Chop order. Swings alternate sides, starting on the side Tibo faces (left or right). The third and fourth swings of a volley sit 10 units lower than the first two.
• Shreds. Only the rear chop flings (fling.back). The 4 shreds fan out over ±0.45 rad behind Tibo, fly at 170 units/s for 0.8 s × Duration and pierce everything. A pest can be hit by this weapon's shreds once per second (rehit 1), however many pass through it.^[2]

Measured in the headless sim (tools/play.mjs, build 41 main-B2gf34bA.js, Standard, Normal, god mode, seeds s1, s2 and s3; the seeded starting weapon removed, the weapon given with give, spawning stopped after 4 s of play and the pests already on the field held at fixed spots with 10⁹ HP; pests held 28 units to each side of Tibo): it chopped right, left and right, 0.1 s apart, every 1.15 s, for 96 (0.8 × 120, Tibo at full HP), and the rear chop flung 4 shreds with a 1 s lifetime. All three seeds gave the same figures.

#Tips

• Two of the three chops face the way Tibo faces, so turn toward the larger group.
• Before Damage bonuses, the cleaver deals 96 per chop at full HP, 204 at half HP and 312 near 0 HP. Low-HP play pays off much more here than on the base Mezzaluna.

#Stats

Values are the raw numbers from the game's definitions, before Tibo's global stat multipliers, difficulty and time scaling. In play, Tibo's base stats add +1 amount to every weapon except aura, cone, nuke and ring weapons, and make every duration ×1.25 (see Stats). Field names in code are the game's internal names. Attack descriptions such as “Melee slash” are this wiki's summary of the internal attack kind.

Evolutions have no level-ups in the game data; they use these fixed raw values.

#Behaviour parameters

Raw parameters of the attack (behavior), copied from the game definition. What they do in play is explained under How it works above.

#Obtaining

• Get Mezzaluna to level 8 while owning Rotten Spud (any level), then open a chest. See Evolutions.

#Names in other languages

Verified: the name the game shows when another language is selected in Settings, from its translation files.^[3] See Languages.

#Data

{
  "id": "moon-cleaver",
  "tier": "evolved",
  "base": {
    "damage": 120,
    "cooldown": 1.15,
    "amount": 2,
    "area": 1.35,
    "speed": 0,
    "duration": 0.15,
    "pierce": 99,
    "knockback": 2,
    "interval": 0.1
  },
  "behavior": {
    "kind": "slash",
    "size": 62,
    "height": 30,
    "hpEdge": {
      "lowHpBonus": 1.6
    },
    "fling": {
      "count": 4,
      "size": 3,
      "speed": 170,
      "life": 0.8,
      "damageMult": 0.4,
      "spread": 0.45,
      "rehit": 1,
      "back": true
    }
  },
  "from": "mezzaluna",
  "catalyst": "rotten-spud"
}