Resident Evil Survival Unit: Tutorial and Early Base Defense Guide

To clear the tutorial and establish your early base in Resident Evil Survival Unit, follow the primary chapter quest log directly rather than freely building or exploring. High-tier construction and core facilities remain locked behind story milestones, meaning quest completion is required to unlock your full operational shelter.

Follow Chapter Quests to Unlock Core Facilities

Sticking to the structured chapter objectives grants fixed player experience, raw supplies, and combat items needed to bypass early bottlenecks. Straying from the chapter log stalls growth because essential structures cannot be built ahead of schedule.

• Prioritize mandatory chapter tasks: Key structures—including training depots, medical tents, and research laboratories—remain inaccessible until you reach designated story checkpoints.
• Open milestone reward crates immediately: Completing a chapter milestone provides bulk building materials that directly fund your next required upgrade.
• Save universal speedup tokens: Early tutorial construction timers are brief and finish quickly on their own. Conserve your speedups for longer building timers later in the game.

Clear Infected Sectors Systematically

Expanding shelter territory requires clearing infected nodes across the base perimeter. Each reclaimed sector yields open building plots, survivor recruits, or supply caches. Tackle these areas one at a time to prevent back-to-back waves from overwhelming recovering squads.

Always compare your squad combat power rating against the recommended stage requirement before starting an encounter. Fighting below the recommended threshold increases casualties and redirects valuable early resources into medical treatments.

Position Heroes and Manage Tactical Skills

Combat encounters combine automatic standard attacks with manually activated skills. Formations and ability timing dictate whether defensive lines hold.

• Anchor the frontline: Place high-health frontline guardians closest to ingress tunnels and environmental barricades. This forces incoming waves into tight clusters and absorbs initial strikes.
• Protect ranged specialists: Position long-range damage dealers and support units directly behind your frontline guardians, allowing them to deal continuous damage without drawing direct threat.
• Hold area skills for dense waves: Do not trigger area-of-effect abilities or defensive shields on isolated scout walkers. Save burst abilities for tightly grouped clusters or elite mutants inside your engagement radius.

Balance Resource Production and Warehouse Storage

Base upgrades require a steady supply of timber, food, and clean water. Early chapter handouts cover initial expenses, but sustainable production is necessary to maintain long-term construction.

Upgrade farms, water treatment stations, and timber yards at an even pace. Upgrading the central headquarters structure demands an even distribution of all three primary commodities, so neglecting a single resource will halt progress.

Keep resource warehouses upgraded to within two levels of your production facilities. Uncapped inventory that exceeds warehouse storage limits cannot be protected if perimeter defenses are breached during incursion sequences.

Train Troops and Fortify Perimeter Defenses

Territory expansion requires an active garrison to withstand escalating attack waves. Once the tutorial unlocks military recruitment, maintain continuous unit production across all available training tents.

Recruit a balanced mix of frontline infantry and backline ranged units. Infantry provide the physical buffer needed to absorb attacks, while ranged units deliver damage safely from behind fortified walls. Whenever chapter milestones pause for technological research, invest surplus materials into upgrading defensive towers and your main gateway to minimize repair costs after siege events.