Godzilla: Destroy All Monsters Melee Remastered: How Do I Get Rodan with That Damn Quest
Short answer
Suggested fix (unconfirmed): Select a map project in the G-force Lab and complete adventure matches to progress your research. Switch to a new map project after each finished research until you reach 8/8 to unlock the final research project for Rodan.
No confirmed fix yet. Players suggest: Try doing a custom battle on Monster Island on Medium/Hard and destroying the stone towers (NOT the ones surrounding the lava pit)
Suggested fix (unconfirmed): Set the CPU difficulty to "Easy" and play aggressively. Use Godzilla 2000's sweeping tail attacks to stun enemies, or spam King Ghidorah's dive bomb.
Suggested fix (unconfirmed): Go to the online game menu and click "invite a friend" to play with up to four friends. Note that there is currently no 4-player matchmaking.
No confirmed fix yet. Players suggest: to be fair, once you get everybody there isnt much else to do besides grinding the gallery, enjoy the time while you have stuff to do in the game while it's there, I got a feeling it'll be a while until we get anything…
Day One Fixes