Mario's core abilities are his Jump and Hammer. These are fundamental to both exploration and combat. Throughout the game, you can find upgrades that enhance these abilities:
- HP-Up Hearts: These are found in specific levels, often hidden or as rewards for puzzles. Collecting them permanently increases Mario's maximum HP, allowing him to withstand more damage in battle. Always prioritize finding these!
- Hammer Upgrades: While there isn't a permanent 'stronger hammer' upgrade in the traditional sense, finding stronger Hammer stickers (e.g., Shiny Hammer, Flashy Hammer) effectively upgrades your hammer's power.
- Sticker Album Expansion: As you progress, you'll find opportunities to expand your Sticker Album's capacity, allowing you to carry more stickers into battle. This is crucial for longer dungeons and boss fights.
Focus on finding HP-Up Hearts and Sticker Album expansions as soon as possible to significantly boost Mario's survivability and strategic options.