SD Gundam G Generation ETERNAL Colony Disc Hidden Boss Solo Guide

To clear the Mobile Suit Gundam Side Story: At the Place Where the Colony Fell event's hidden stage solo in SD Gundam G Generation ETERNAL, deploy a single mobile suit capable of eliminating grunts with one-shot counterattacks, bait small enemy clusters along map perimeters, and isolate the hidden boss away from escort fire.

Running a single unit removes allied positioning liabilities and concentrates combat momentum, but it requires strict threat-range control and turn-phase discipline.

Solo Deployment Prerequisites

A solo run leaves no allied defenders or repair tenders to absorb stray fire. Your deployed carry suit must absorb multi-target enemy phases and destroy attackers on reaction.

Pair your mobile suit with a pilot that provides defensive damage cuts, ranged evasion, or accelerated EX skill generation. If your unit cannot reliably eliminate standard escorts during counterattacks, accumulated chip damage across consecutive turns will defeat your suit before the boss appears.

Threat Range and Opening Routing

Do not charge directly toward the center of the grid on turn one. Rushing into overlapping firing arcs exposes your unit to combined fire before your defensive buffs and skill meters ramp up.

1. Check Threat Perimeters: Inspect enemy movement boundaries to identify firing lanes and natural map choke points.
2. Bait the Perimeter: Move your suit to the outer edge of only one or two hostile threat zones.
3. Split Formations: Forcing the nearest targets to spend their full turn closing distance prevents them from forming defensive support links.
4. Resolve Isolated Duels: Destroy incoming units during their attack phase so your next active turn remains free for positioning.

Turn Economy and Counterattack Rules

A solo run relies on enemy-turn counterattacks to offset the enemy's numerical advantage. During your player phase, attack only high-priority targets that threaten debuffs or heavy burst damage. If an enemy can be baited and destroyed by a single counterattack, spend your player phase repositioning or activating defensive skills instead.

• Select Reliable Hit Rates: Use dependable beam or ballistic weapons with 100% kill accuracy rather than low-accuracy heavy weapons against agile scouts.
• Conserve High-Cost Weapons: Save high-tier energy reserves and EX skills for elite targets rather than spending them on grunts.
• Prevent Incoming Hits: Eliminating targets on reaction removes their damage entirely, keeping your health pool intact for the boss.

Isolating and Defeating the Hidden Boss

The hidden boss activates once you clear primary stage objectives or reach designated turn and zone triggers. The boss features boosted offensive stats and spawns alongside heavy escort units.

1. Conduct a Tactical Retreat: Do not engage the boss immediately while escort units remain within range. Fall back toward open terrain.
2. Exploit Movement Differences: The boss moves at a different speed than heavy escort machines, naturally stretching the enemy group across the map.
3. Clear Remaining Escorts: Destroy pursuing escort units as they separate from the boss, ensuring no support fire remains.
4. Bait at Maximum Range: Step into the boss's maximum engagement range to draw out its lower-efficiency long-range attacks rather than its high-damage primary weapon.
5. Execute Burst Damage: On your following turn, close the gap and unleash your highest-damaging EX skill.
6. Finish on Counter: End your turn in defensive range to trade blows, allowing your counterattack to deplete the boss's remaining health.