Ability Upgrade Guide
Ability Upgrade is the per-equipped-ability investment layer. Each ability in one of your three equipped slots can be leveled 1 to 7, banking permanent multipliers to damage, cooldown, or walkspeed. This guide covers the full cost ladder, the slot-binding rule, and the optimal Reaper / Flash splits per ability. Updated .
Slot Mechanic — Read This First
Upgrades bind to the ability slot, not your account. If you upgrade Spin in slot 1 to Lv7, then swap Spin into slot 2, you lose those bonuses — the new slot starts at Lv1. The Lv7 investment stays attached to whatever ability you put back into slot 1.
Practical impact: commit to a main DPS ability per slot before pouring 6.5m coins into it. Resetting an upgrade costs 100,000 coins with no coin refund (you only get the upgrade points back to redistribute among DMG / CD / WS).
Source: ❔ faq channel, developer Foong, 2026-05-09 + 2026-05-12.
Per-Stat Scaling
You spend one upgrade point per level (Lv1 → Lv7 = 7 points total per ability slot). Distribute those 7 points across DMG, CD, and WS in whatever ratio you choose.
| Stat | Per-level | Max (Lv7 all-in) | When to pick |
|---|---|---|---|
| Damage | +0.05× / lv (additive multiplier) | ×1.35 at Lv7 (+35%) | Default pick. Scales with base ability damage; biggest contributor to per-hit output. |
| Cooldown | +0.02× CDR / lv | ×1.14 at Lv7 (-14% CD) | High-value on slow-rotation abilities (Reaper sets, raid setups). Caps a hard rotation window. |
| Walkspeed | +0.03× / lv | ×1.21 at Lv7 (+21% WS) | Not recommended per developer Foong — trait/title walkspeed bonuses already saturate mobility; this slot is wasted on WS. |
Cost Ladder (Lv1 → Lv7)
| Level | Coin cost | Cumulative |
|---|---|---|
| Lv1 | 100,000 | 100,000 |
| Lv2 | 300,000 | 400,000 |
| Lv3 | 600,000 | 1,000,000 |
| Lv4 | 1,000,000 | 2,000,000 |
| Lv5 | 1,500,000 | 3,500,000 |
| Lv6 | 1,500,000 | 5,000,000 |
| Lv7 | 1,500,000 | 6,500,000 |
Total to fully upgrade one ability slot: 6,500,000 coins.
Optimal DMG / CD Split Per Ability
Walkspeed upgrades are skipped — trait and title walkspeed bonuses already cover mobility. That leaves a 7-point split between DMG and CD. The optimal split depends on the trait you run on that slot:
- Reaper: trait already grants +20% CDR — invest more into DMG.
- Flash: trait grants +20% DMG and +20% CDR — go pure DMG to maximize per-hit output.
| Ability | Reaper split | Flash split | Note |
|---|---|---|---|
| Spin | 5 DMG / 2 CD | 5 DMG / 2 CD | Top damage profile — DMG-heavy split on either trait. |
| Head of Hei | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| Destructive Fists (Akaza) | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| Saiyan | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| Pride | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| Atomic | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| Coyote | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| Fire Fighter | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| Sosuke | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| King of Curses | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| Nen Prodigy | 5 DMG / 2 CD | 6 DMG / 1 CD | |
| Zorro | 6 DMG / 1 CD | 7 DMG / 0 CD | Zorro favors pure DMG — already low base CD on slash chain. |
| Shadow Monarch | 5 DMG / 2 CD | 6 DMG / 1 CD | Per-shadow damage benefits from DMG multiplier; CD shortens summon cycle. |
Source: ❔ faq channel, developer Lunatic, 2026-05-12 — "Best Weapon Upgrades" thread.
How Upgrade Multiplies With Rebirth
DMG sources stack multiplicatively at the calculation step. At R5 with Flash trait + Lv7 all-DMG upgrade on Spin, your damage profile becomes:
- Base: Spin g-skill 1881
- ×R5: +250% DMG → ×3.50
- ×Flash: +20% DMG → ×1.20
- ×Upgrade: +35% DMG → ×1.35
- = 1881 × 3.50 × 1.20 × 1.35 = 10,664 per g-skill hit before pet / title / aura modifiers.
Numerical example provided for orientation. Title (e.g. Steel Ball Run), pet damage stat, and ability mastery passives stack on top of this baseline. See the Rebirth page and Mastery page for the other two multipliers.
Sources
- Tier 1 — Discord FAQ: developer Foong,
❔ faqchannel, 2026-05-09 — slot-binding rule, per-level scaling, cost ladder. - Tier 1 — Discord FAQ: developer Lunatic,
❔ faqchannel, 2026-05-12 — Best Weapon Upgrades thread, optimal Reaper / Flash splits per ability.