I never actually beat the game, so I've decided I'd start the whole game over. I remember how fun it was and can't wait to start it. I've lost my DS, with my Pokemon Diamond in it... But at least I still have my GBASP.
Well, if you have any tips please post!
I got to the end and never understood how to unlock everything! I hope I can this time around!
I've decided to make a log, it might help you while playing too!
This will be somewhat a guide.
±~The Log~±
*People met are in the order I found them in.
-First Time Around-
Stage 1- Clear, but died on the Boss
People Understood: Dr. O'Shay [01], Alejo [26], Wato Chiyoko [02]
Stage 2- Clear, next time around I need to stick to the right of the underground place in 2-3 and keep going, instead I went directly to the tunnel after meeting the 2 detectives.
People Understood: Amazing Three [04], Rainbow Parakeet [06], Wally Kisagari [07], Magma [30], Pook [42]
Stage 3 - "Astro Vs. Atlas"- Clear have to remember to search the place with beams next time around, my sensors are low so it was foggy.
People Understood: Hecate [36],
Stage 4- Clear
People Understood: Rag [12],
Stage 5 - "Marine Express"-
People Understood:
[B]Current Powerups:
LIFE:
PUNCH:
LASER:
SHOT:
JETS:
SENSOR:
Omega Factor:
Rag [12] - Sensor to level 2
Hecate [36] - Punch to level 2
However, the second run will be slightly different from the first one. At the end of the second ending, you'll have the ability to replay any part of the game previously visited, allowing you to solve the few puzzles that will unlock the last level. I can direct you to a complete FAQ if you want 
