Interesting ideas here. You have a lot of variety, with some marked shifts in tone between each of the three character's associated songs; the little bit of chaos in "a mischievous stranger," the upbeat synth vibes in "visitor from tomorrow" and the mysterious, not quite ominous atmosphere of "a forgotten world." "the fate of all worlds" sounds like it could be more of a final dungeon leading up to the climax kind of theme, at least to my ears. Overall, an enjoyable listen, nice work!
(I, too, bought a fancy new VST to play with during this jam btw)