Achieving 100% completion in Metroid Dread requires finding every single Energy Tank, Missile Tank, Power Bomb Tank, and Aeion Tank. This often means revisiting areas with new abilities to access previously unreachable sections. Use your map extensively, looking for gray squares (unexplored areas) and question marks (unidentified items). The Pulse Radar is invaluable for revealing hidden blocks. Don't be afraid to use Power Bombs in suspicious large rooms. A 100% run will test your exploration skills and mastery of all Samus's abilities.
