Level 4-3
Digital Fortress
Storm the Digital Fortress, the city's central defense network. This fortress level combines cyber warfare with traditional combat, featuring multi-layered security systems and the first major virus attack.
Level Objectives
- Breach 4 security layers
- Survive the virus attack
- Defeat the Security AI
- Complete with 60% accuracy or higher
Video Walkthrough
Step-by-Step Guide
Four-Layer Security System
The fortress has 4 security layers you must breach: Layer 1 (Password Gate - shoot correct symbols), Layer 2 (Laser Grid - navigate without touching), Layer 3 (Drone Swarm - defeat 20 drones), Layer 4 (Firewall - DPS check, 30 seconds to deal 20,000 damage).
Password Gate Puzzle
Layer 1 shows 9 symbols (3x3 grid). Shoot the 3 correct ones to open the gate. Correct symbols glow faintly green for 1 second every 5 seconds. Wrong symbol = gate resets and spawns 3 enemies. Patience is key.
Virus Attack Event
At 60% progress, the fortress AI deploys a digital virus. Your screen glitches with visual distortion for 20 seconds. Controls remain normal but seeing is harder. During virus attack, reduce aggression and focus on survival. Antivirus power-ups drop from enemies.
Security AI Boss Fight
The AI manifests as a digital entity (holographic form). Phase 1: Shoots bullet patterns, summons drones. Phase 2 (50% HP): Splits into 3 copies. Only one is real (slightly more opaque). Destroy the real one; attacking fakes wastes DPS.
Enemy Guide
Security Drone
(Standard Defense)Tips: Basic fortress defenders. They come in huge numbers (50+). Use bombs wisely when overwhelmed. Each drone is weak (1-2 hits) but dangerous in groups.
Laser Turret
(Static Defense)Tips: Wall-mounted turrets that fire continuous laser beams (sweep left-right). Destroy turrets from their blind spots (directly above or below).
Security AI
(Digital Boss)Tips: Two-phase holographic boss. In Phase 2, look for the opacity difference to identify the real copy. Real copy has a subtle shadow underneath; fakes don't.
Boss Battle Tips
- •Password Gate: Screenshot the symbol pattern if needed. The correct symbols always form a diagonal line (top-left to bottom-right)
- •Laser Grid Layer 2: Lasers follow a pattern - 3 horizontal → 3 vertical → repeat. Move during horizontal phase (easier to dodge)
- •Virus Attack: Close your eyes periodically to reset your focus. The glitches create eye strain. Brief pauses help
- •Security AI Phase 2: If unsure which copy is real, shoot all three briefly. The real one takes damage (health bar moves); fakes don't