Lands of Jail: Supreme Iron Prison Squad and Buff Guide

To clear Supreme Iron Prison stages in Lands of Jail, deploy a durable two-tank frontline, prioritize defensive and sustain buffs early, and manually time your crowd control to interrupt elite enemy abilities. Troop casualties suffered in this trial mode do not drain your permanent base hospital reserves, allowing you to run aggressive, frontline-heavy lineups without risking base defense assets.

Mode Rules and Failure Conditions

Supreme Iron Prison is an escalating, multi-phase trial mode. Squads fight through sequential enemy waves to earn combat tokens and stage modifiers.

Stage Timers: You must eliminate all enemies before the countdown reaches zero. If time expires, the run fails immediately regardless of your remaining squad health.
Casualty Rules: Injured or defeated units within the trial do not consume base hospital resources or permanent troop inventories.
Elite Scaling: High-tier enemies and boss units have high crowd-control resistance, making raw burst damage, armor reduction, and multi-hit debuffs necessary for beating the enrage timer.

Recommended Squad Composition

A single tank often collapses under the burst damage of deeper floors. Running a primary tank paired with an offensive bruiser provides the frontline stability needed to protect your backline damage dealers.

Slot Role	Combat Responsibility	Recommended Kit	Target Stats
Main Tank	Anchors aggro and absorbs boss burst	Shields, flat damage reduction	Max HP, Armor, Resilience
Secondary Bruiser	Disrupts flanks and adds minor control	Stuns, knockbacks, offensive sustain	Life Steal, Defense, Attack
Primary DPS	Clears trash waves and applies area debuffs	Wide AoE strikes, skill resets	Crit Rate, Crit DMG, Armor Pierce
Single-Target Assassin	Eliminates high-threat elite targets	Direct pierce, execute thresholds	Attack Speed, Burst Crit, Penetration
Tactical Support	Squad energy battery, cleansing, and shielding	Skill cooldown reduction, team buffs	Energy Regen, Skill Haste, HP

Pair energy-generating supports with high-cost ultimate users so your primary damage dealers can unleash their burst abilities at the start of each wave.

Stage Buff Priority

Between cleared waves, choose one of three randomized modifiers. Secure squad survival through defensive and sustain modifiers before picking pure offense.

High Priority: Survival and Energy

Life Steal and Health Siphon: Converts damage into immediate healing, keeping your frontline alive without relying entirely on support cooldowns.
Damage Mitigation and Armor Percentage: Prevents high-tier boss hits from eliminating tanks in a single burst.
Energy Recovery on Kill: Refills ability meters immediately when clearing standard waves, prepping burst skills for the next wave.

Secondary Priority: Damage Scaling

Armor Shred and Defense Piercing: Counteracts the high armor values on late-stage brute units.
Critical Hit Chance and Critical Damage: Increases overall damage output to prevent timeout defeats once survival is stable.

Avoid conditional buffs that trigger only at low health thresholds, such as bonuses that activate below 20% HP. Late-tier elites deal enough burst damage to wipe low-health heroes before these perks activate.

Manual Skill Timing and Target Priority

Auto-battle often wastes high-impact skills on near-dead enemies or mistimes interrupts. Switch to manual controls on difficult floors to manage cooldowns directly:

Save interrupts for boss channels: Hold hard crowd-control skills until an elite begins charging a telegraphed ultimate attack. Canceling the channel prevents massive frontline damage.
Hold AoE abilities between waves: Do not activate large area-of-effect skills when only one low-health enemy remains. Finish the straggler with basic attacks so your full burst is ready for the next wave.
Focus squishy targets first: Manually direct your single-target damage dealers to eliminate enemy snipers and supports before tackling durable frontliners.

Maximizing Event Points

Floor clears reward development materials, equipment fragments, and speedups tied to personal milestone brackets and leaderboard rankings.

Push as many floors as possible immediately following the daily reset to maximize accumulated daily rewards.
Replay completed floors where you failed to achieve a full three-star rating to squeeze out extra ranking points.
Schedule major agent level-ups, equipment augmentations, and chip upgrades during active trial days to convert immediate power increases into higher floor clears.