Chrono Trigger Guides and Walkthroughs
Chrono Trigger is a 1995 role-playing video game developed and published by Square for the Super Nintendo Entertainment System that began the Chrono series. Chrono Trigger's development team included three designers that Square dubbed the "Dream Team": Hironobu Sakaguchi, the creator of Square's successful Final Fantasy series; Yuji Horii, a freelance designer and creator of Enix's popular Dragon Quest series; and Akira Toriyama, a manga artist famed for his work with Dragon Quest and Dragon Ball.
In addition, Kazuhiko Aoki produced the game, Masato Kato wrote most of the story, while composer Yasunori Mitsuda wrote most of the soundtrack before falling ill and deferring the remaining tracks to Final Fantasy series composer Nobuo Uematsu. The game's story follows a group of adventurers who travel through time to prevent a global catastrophe.
Crono's Ultimate Weapon - Rainbow
In order to acquire Crono's Ultimate Weapon you'll need to complete the Rainbow Shell Sidequest as well as the Sunstone Sidequest. Once you've completed both of these, speak with Melchoir in the Guardia Castle Basement, he's standing next to the Rainbow Shell. Do this and he'll give you Rainbow, Crono's Ultimate Weapon.
Chrono Trigger Sidequests
After you obtain the Epoch and can travel around each time line from the air you'll be able to complete a multitude of Sidequests. If you speak to the Old Man in The End of Time, he'll tell you about each of these quests - giving you a clue of where to go to start it.
East Money at start of the game
When you enter Guardia Forest at the start of the game there is a bush near the exit that will be shaking. Inspect this bush for a Shelter. Head through the forest and exit towards the castle. Don't go to the castle but instead enter the forest again and backtrack to this bush. You can inspect it again for another Shelter. Do this as many times as you'd like.
New Game +
After you beat the Black Omen dungeon and Lavos the ability to create a New Game + will become available. This will allow you to start again with all of the items of your previous game as well as levels. You can now fight Lavos again or continue through the game. It's much easier to unlock a lot of the different endings during this game mode.
There are 13 total endings you can see in Chrono Trigger. Depending on when you choose to kill Lavos your ending will be different. Here's a list of each of the different endings in Chrono Trigger and how to unlock them.
Ending 1: Beyond Time - Beat Lavos at the end of the game
Ending 2: Reunion - Beat Lavos while Chrono is dead
Ending 3: The Dream Project - Beat Lavos after Marle joins the party (New Game +) OR in the Black Omen dungeon
Ending 4: The Successor of Guardia - In New Game + Beat Lavos the as soon as you return from 600 AD
Ending 5: Good Night - Use the bucket in the End of Time the first time you're there to beat Lavos.
Ending 6: Legendary Hero - Beat Lavos before you get the Hero Medal but after hearing that Tata is the hero
Ending 7: The Unknown Past - Beat Lavos after getting the Hero Medal, but before the Masamune is fixed
Ending 8: People of the Times - Beat Lavos after getting the gate key back in 65,000,000 BC
Ending 9: The Oath - Beat Lavos after getting the Masamune fixed, but before opening the magic cave
Ending 10: Dino Age - Beat Lavos after defeating Magus, but before defeating Azala
Ending 11: What the Prophet Seeks - Beat Lavos after defeating Azala
Ending 12: A Slide Show - Beat Lavos after Schala uses her pendant, but before yours is powered
Ending 13: Day of Lavos - Fight Lavos and lose