In my experience playing Pokémon Legends: Arceus, starting with a Mudkip can be a fantastic choice for trainers who value both Water-type strength and versatility. Mudkip typically appears around level 18 early in the game, making it accessible to most players at the beginning stages of their adventure. One key aspect that helped me advance my Mudkip efficiently was keeping a close eye on the experience points (Exp. Points). I focused on battling wild Pokémon and completing field tasks to steadily increase my Mudkip’s level. Each time it leveled up, I noticed significant improvements, especially once it evolved into Marshtomp. The size classification of Mudkip also intrigued me because it influenced both its battle capabilities and certain in-game interactions. Noticing Mudkip's size helped me decide when to nickname it, adding a personal touch to my team. If you're hunting for a shiny Mudkip, be prepared for some patience. While shiny variants are rare, consistent encounters and use of shiny charm or similar mechanics can increase your chances. Using my Mudkip in battles against various elemental types has been rewarding, especially when leveraging its Water moves against Fire and Rock opponents. This strategic advantage made progression through the game smoother. Overall, focusing on these elements—leveling up methodically, understanding size classifications, and aiming for shiny variants—can significantly enhance your Pokémon Legends: Arceus gameplay experience with Mudkip.