Neo Monsters: How to Beat Ultimate Challenge Gatekeepers

To clear the 1000, 1500, and 2000 Ultimate Challenge Gatekeepers in Neo Monsters, replace fragile glass-cannon setups with durable brawler teams, control your team's average Time Units (TU), and single out high-threat enemy monsters immediately.

Gatekeeper Milestone Breakdown

Each major Gatekeeper milestone scales enemy stats and punishes uncoordinated teams. At tier 2000 in particular, damage output is severe enough to defeat low-survivability attackers before they can take action.

Gatekeeper Tier	Primary Enemy Threat	Tactical Objective
1000	High stat baseline and initial damage spikes	Build frontline durability and test baseline damage output.
1500	Defensive passives, active healing, and speed	Integrate buff removal and cleanse support to maintain fight tempo.
2000	Fatal burst damage and turn manipulation	Swap to brawler lineups, stun/delay high threats, and minimize high-TU moves.

Roster Building and Key Passives

At higher thresholds, surviving enemy rotations takes priority over pure area-of-effect damage.

Brawler Core: Choose units balancing moderate-to-high attack with deep HP pools and damage-mitigation passives. Pure glass cannons struggle to survive tier 2000 opening turns.
Defensive Utility: Include monsters with Shield or Auto-Guard passives to redirect single-target hits away from primary damage dealers.
Buff Cleanse and Status Support: Field a secondary support unit capable of removing enemy stat buffs and shields or disrupting enemy order via stun and delay skills.
Sustain: Equip units with self-healing or team recovery abilities to endure long battles of attrition.

Turn Order Management and Targeting

Careless skill usage allows the AI to gain action priority. Follow these combat steps during Gatekeeper encounters:

Focus Single Targets: Do not split damage across multiple enemies. Identify the single highest-threat enemy monster—typically units with high-damage AOE attacks or turn-stealing skills—and burst it down first.
Limit High-TU Abilities: Using skills with high Time Unit costs leaves your team vulnerable to uninterrupted enemy counter-attacks. Keep average TU usage low to retain fight initiative.
Control Turn Delays: Use stuns and turn delays on key secondary targets to prevent the AI from establishing momentum while your sweepers focus the main threat.
Audit Gear and Levels: Maximize monster levels and equip your best available accessories before spending energy on tier 1500 and 2000 attempts. If a wall is hit at tier 1500 or 2000, pause progression to upgrade roster stats and test alternative support combinations.