Appendix:FireRed and LeafGreen walkthrough/Section 17
After exploring the rest of the Sevii Islands, there's only one area left to investigate - Cerulean Cave. To reach it, stop back in Cerulean and surf south from the bridge. The cave entrance is located on the western shoreline.
Cerulean Cave
This is a treacherous cave, with not only powerful Pokémon, but a wide variety of species as well. Stock up on Ultra Balls and bring your Super Rod along. Make sure to bring along a team with Surf and Rock Smash, and withdraw that Master Ball from the PC. Mewtwo is one tough fighter, and even harder to catch than the legendary birds, so if you used it already, you're in for a long battle.
1F
From the entrance, walk to the water's edge and surf north to the small island in the northeast corner. Take the stairs here to reach the second floor, and a Full Restore lying behind a few breakable boulders. Return to the first floor.
Surf west across the pond, and climb out of the water onto the northern steps. Pick up the Nugget, and take the stairs south of here to the second floor, where you'll find a PP Up behind another breakable boulder. Return to the first floor again.
Walk south off of the rock ledge, and grab the Full Restore near the group of breakable boulders. Step up onto the rock ledge to the east, and take the first stairs you see to the second floor yet again. Smash the boulder and pick up the Ultra Ball, and take the stairs back to the first floor.
Grab the Max Elixir to the northwest, and follow the rock ledge counter-clockwise to reach the stairs in the center. Take these stairs to the second floor.
2F
There are three different paths branching out from these stairs, but the only one that leads anywhere runs counter-clockwise through the center of the floor to the stairs in the northwest corner.
This area is a small, isolated area in the northwest of the first floor. Take the only other stairs down to the basement floor.
B1F
Follow the pathway to the east. In the northeast, near a group of breakable boulders, is a Max Revive. Follow the path south, and step up onto the central rock ledge. Grab the nearby Ultra Ball, and continue west to the water's edge.
Surf to the northwest to reach the tiny, isolated island where Mewtwo waits.
Mewtwo
Not only is it the strongest Pokémon in the game, but when you find it, it's already at level 70. If you don't have the Master Ball, this is going to be even tougher than catching the legendary birds. Like with any legendary, SAVE THE GAME before approaching it; with only one shot, you don't want to mess this up. If you do have the Master Ball, than all you have to do is throw it right away, don't even bother battling with it. Most damage you inflict will probably be healed right away, since it can use Recover 10 times. His few weaknesses include attacks from the Bug-, Ghost-, and Dark-types, so moves like Shadow Ball and Bite will have the greatest effect. You may want to dispatch the legendary birds against him, since he is the only thing stronger than them. Without the Master Ball, try inflicting status problems that prevent it from recovering its health, like Sleep or Freeze.
Once the battle's done, use an Escape Rope (or Dig) to exit the cave. You have now passed every challenge in the game, though you may still have holes in your Pokédex data. With every area explored, all that's left is to complete the Pokédex for Professor Oak. If you manage to do it, remember to show it to the Game Freak employees in Celadon for your reward.
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FireRed and LeafGreen walkthrough |
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This article is part of Project Walkthroughs, a Bulbapedia project that aims to write comprehensive step-by-step guides on each Pokémon game. |
