Achieving 100% completion in Metroid Prime 3: Corruption requires collecting every Energy Tank, Missile Expansion, Ship Missile Expansion, and Friend Voucher, as well as scanning every single creature, lore entry, and object in the game. This is a significant undertaking that demands thorough exploration and backtracking.
- Scan Everything: Make it a habit to scan every new enemy, object, and lore entry you encounter. If an enemy has a red reticle, it means you haven't scanned it yet. Revisit areas with your Scan Visor to find missed entries.
- Map Completion: Ensure every room on your map is fully explored. Unexplored sections are often marked in grey. Use your map frequently to identify areas you haven't visited or where you might have missed a path.
- Backtracking with New Abilities: Many collectibles are locked behind abilities you acquire later in the game. After getting a new Beam, Morph Ball upgrade, or utility item, revisit older planets and areas. Look for previously inaccessible doors, magnetic tracks, or destructible blocks.
- Friend Voucher Hunting: These are often the trickiest to find. Consult a dedicated guide or map for their precise locations, as they can be very well hidden.
- Check Your Logbook: Regularly review your Logbook to see what entries you're missing. This can help you target specific enemies or lore entries you need to find.
Patience and meticulous exploration are your greatest allies for 100% completion. The rewards for this dedication include bonus galleries, sound tests, and a deep satisfaction of fully mastering the game.