Metroid Prime 4 Wiki: Upgrades, Boss Strategies, Map Guide & Scan Logs

Upgrade Breakdown Metroid Prime 4 brings back classic upgrades and adds new ones. Here's the complete list organized by type. ### Beam Upgrades | Beam | Location | Effect | |------|----------|--------| | Power Beam | Starting equipment | Standard shots, weak to most enemies | | Wave Beam | GFS Aegis – Reactor Core | Phase through shields, stun electrical foes | | Ice Beam | Talon IV – Frozen Tunnels | Freeze enemies, create platforms over lava | | Plasma Beam | Pyrosphere – Magma Chamber | High damage, melts ice barriers | | **Phase Shift Beam** (NEW) | Chronos Rift – Temporal Nexus | Shifts enemies between timelines, slows projectiles | | Dark Beam | Umbral Depths – Shadow Vault | Drains enemy life, opens void doors | | Light Beam | Sanctum of Radiance – Core | Heals you when hitting corrupted targets | | Annihilator Beam | Post-game – Omega Lab | Combines Light + Dark, massive AOE | ### Visor Upgrades

**Combat Visor** – Default, shows enemy health bars (up to 500m range)

**Scan Visor** – 347 scan logs, highlights interactive objects within 30m

**Thermal Visor** – See heat signatures through walls (limited to 20 seconds use)

**X-Ray Visor** – Reveals hidden passages and invisible enemies

**Echo Visor** (NEW) – Sonar-based, reveals moving enemies through solid obstacles ### Suit Upgrades

**Varia Suit** – Reduces fire damage by 75%, required for Pyrosphere

**Gravity Suit** – Zero-friction movement underwater, infinite oxygen

**Phazon Suit** – Immunity to Phazon pools, found in crashed Leviathan

**Light Suit** – Doubles movement speed in light zones, halves in dark zones

Boss Strategies ### 1. Arachnoid Hive Queen

**Location**: Tallon IV – Arachnoid Hive

**HP**: 2,400

**Weakness**: Wave Beam (electrical conduits on ceiling)

**Strategy**: Shoot the glowing orange sacs on its back while dodging web projectiles. When it summons spiderlings, use Power Beam with Charge Combo to clear them in 2 shots each. ### 2. Space Pirate Commander Kraid

**Location**: GFS Aegis – Cargo Bay B

**HP**: 4,800

**Weakness**: Ice Beam to freeze his arm cannons, then Plasma Beam to melt the ice and deal damage

**Tip**: His tail swipe has a 1.5-second wind-up—morph ball into a crevice to avoid. ### 3. Phazon Core Guardian

**Location**: Leviathan – Core Chamber

**HP**: 6,000

**Weakness**: Light Beam to purify Phazon nodes (3 nodes total)

**Strategy**: Use Echo Visor to track its movement when it turns invisible. Phase Shift Beam slows its charge attack by 50%. ### 4. Ridley (True Form)

**Location**: Omega Lab – Final Sector

**HP**: 12,000

**Weakness**: Annihilator Beam (post-game) or alternating Light/Dark

**Pattern**: 3 phases—Phase 1: Fire breath (dodge left), Phase 2: Tail stabs (morph ball), Phase 3: Supernova (stand on moving platform) ### 5. Metroid Prime (Echo)

**Location**: Chronos Rift – Temporal Nexus

**HP**: 8,000

**Weakness**: Phase Shift Beam to create time echoes of yourself—each echo deals 20% of your damage

**Note**: This boss has 4 clones. Only the one with red eyes is real. ### 6. Chozo Ghost Lord

**Location**: Sanctum of Radiance – Arena

**HP**: 5,500

**Weakness**: Light Beam + Scan Visor to reveal its true form (appears every 10 seconds)

**Tip**: Don't shoot the fake ones—they explode dealing 200 damage. ### 7. Dark Samus

**Location**: Umbral Depths – Void Core

**HP**: 10,000

**Weakness**: Dark Beam to absorb her attacks, then Light Beam to counter

**Strategy**: Stay in morph ball mode when she uses Phazon Storm. Use X-Ray Visor to spot her teleport destination.

Map Guide The game has 12 interconnected zones. Here's the critical path: 1. **GFS Aegis** (Tutorial) – 5 scan logs, Power Beam 2. **Tallon IV – Surface** – 15 logs, Combat Visor 3. **Arachnoid Hive** – Wave Beam, 3 hidden energy tanks 4. **Frozen Tunnels** – Ice Beam, Varia Suit (required before Hive) 5. **Pyrosphere** – Plasma Beam, 2 missile expansions 6. **Magma Chamber** – Gravity Suit, boss fight 7. **Leviathan** – Phazon Suit, 4 Phazon nodes 8. **Chronos Rift** – Phase Shift Beam, Echo Visor 9. **Umbral Depths** – Dark Beam, Light Suit 10. **Sanctum of Radiance** – Light Beam, Chozo artifacts 11. **Omega Lab** – Annihilator Beam, final Ridley fight 12. **Void Core** – Dark Samus, credits **Pro tip**: Use the map to mark artifact locations. There are 12 Chozo artifacts—collecting all 9 unlocks the Light Suit early.

Scan Log Completion Total scan logs: 347. Breakdown by category:

**Creatures**: 89 (includes 12 new species)

**Research**: 74 (Lore on Phazon and Chozo)

**Pirate Data**: 52 (Comm logs, security protocols)

**Chozo Lore**: 48 (History of Tallon IV)

**Upgrades**: 31 (Descriptions of all beams/visors/suits)

**Boss Data**: 14 (Weakness info after first defeat)

**Environmental**: 39 (Geology, flora, energy readings) **Missable scans**:

The **Luminoth Crystal** in Chronos Rift (zone 2, after Phase Shift Beam) – only available before defeating the Temporal Guardian

**Pirate Commander's Log #7** in GFS Aegis – hidden behind a Wave Beam door in Cargo Bay A

FAQ **Q: Can I go back to previous areas after beating the final boss?** A: Yes. After the credits, you respawn at the last save point before the Dark Samus fight. All areas remain accessible. The Annihilator Beam is only available post-game. **Q: What's the fastest way to get 100% completion?** A: Follow the critical path first to get all beam upgrades. Then backtrack using the Echo Visor to find hidden rooms. Use the map markers—you can place up to 50. Focus on Chozo artifacts early for the Light Suit. **Q: Is there a difficulty spike with the Phase Shift Beam?** A: Yes. The Temporal Guardian boss requires precise timing—the Phase Shift Beam has a 2-second cooldown. Use it only when you see the boss's attack flash. Practice in the Chronos Rift training room first.