Omega Sherro Boss Guide - Echoback Landing

The coastline duelist of Echoback Landing

Omega Sherro is the Omega boss of Echoback Landing — one of the three quest-gated weekly challenges (see the world bosses overview). Its base creature, Sherro (NO.055), is a Water-element DPS with 509 total attributes, HP 100, and ATK 121 per the official companion wiki — a sword-and-shell fighter whose lore says it turns its old shell into weapons to protect the Shellies along the coastline.

Unlocking the fight

The kit you are fighting

The boss script is not yet documented on the live build; the official Aniilog page shows the kit it is built from — and the design brief is unmistakable: everything scales near water.

• Tidal Heart — its trait adds +25% Water damage for 20s while in water terrain or after absorbing water.
• Water-amplified slashes — Flowing Water Slash (three-hit combo into a bonus heavy slash) converts to water blades near water for extra damage; Torrent Slam’s puddles add damage and a damage amp; its Torrent Blade ultimate (power 160) greatly extends its range the same way.
• Sustain and armor — Prismana Slam grants Super Armor for 5s near water, and Hydro Roll trades stamina for ram damage while regenerating stamina mid-roll.

The tactical read writes itself: the fight location is the difficulty dial. Near the shoreline Sherro is at full power; pulled inland, most of the kit’s bonuses fall off.

Team preparation

• Elements: Water defender — bring Lightning, Ice, or Grass damage (1.6x); Fire, Water, Earth, and Dark are resisted (0.625x). Full grid in the type chart.
• Terrain control: if the arena allows repositioning, fight away from water — the single biggest damage reduction available costs no team slot.
• Sustain check: between armor windows and rolling sustain, expect a longer fight than Infergon — a Support slot pays off (the team composition guide covers the framework).

Rewards

Omega clears are weekly-limited with the tier’s richer payoff — drop specifics are being documented from the live servers and will land here with a last-verified date. The other two Omegas are Omega Infergon (Russet Highlands) and Omega Tuckin (Mistwoods).