Another nice little map! There exists a user-created BEE item that lets you have portal magnets that can be enabled and disabled, so that you can use triggers to make them turn on when you're in line with the surface. So that could have been helpful here. Thumbs up.

Fun puzzle - thanks for creating.

Took forever to place portal on floor in exit room(about 30 shots)

I am close to getting this out but I cannot figure the last move.

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Fun little challenge.