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    Home»Guides»MIO: Memories In Orbit – How To Get Mel Back
    Debby Boss Fight
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    MIO: Memories In Orbit – How To Get Mel Back

    By Callum MarshallJanuary 19, 2026Updated:January 20, 2026
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    As many of you coming to this guide for answers will already know. At some point in MIO: Memories In Orbit, Mel will go missing and your resident merchant will no longer be available.

    You would think this would be a temporary issue, but the reality is that you could easily roll credits without ever getting them back. Mainly because the method of rescuing this merchant isn’t super clear. 

    So, to help you do this and give you a way to spend all that Nacre and all those Old Cores again. We have a guide on how to rescue Mel. 

    MIO: Memories In Orbit

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    MIO: Memories in Orbit Guides Hub

    Where Is Mel After Being Kidnapped? 

    Mel Location MIO

    After Mel gets taken by Dr Hayln’s collector, you’ll need to explore The Vaults fully to find where they are being kept. But, the path to Mel is pretty well hidden. 

    The start of this path is found in a large open room not too far left or the Vault Overseer save point. You’ll want to head through this hidden path shown above. 

    From here, you will need to navigate a path filled with tough enemies and Gloomwater hazards. Then, along the way, you will need to press pump system switches to raise and lower Gloomwater to reveal new paths forward. 

    Debby Boss Location

    Eventually you will complete the loop around, allowing you to open the locked door below the Vaults Overseer save point. Then, where Rad is standing, you’ll want to hop down this pipe which will take you through to a boss arena. 

    How To Rescue Mel 

    Debby Boss Fight

    To get Mel back, you need to defeat Debby, otherwise known as Dr Hayln’s collector. This is a boss that uses Gloomwater turrets and bombs to remove safe platforms below your feet. 

    The key to winning this fight is using your dodge ability to avoid taking damage from their Gloomwater attacks, as positioning will only do so much. 

    Second, you’ll need to use Sail to keep yourself on a solid platform and avoid their turret attacks. 

    Then third, you’ll want to be aware of the spikes on each side of the arena, that can be an issue if you get penned into a corner. 

    Provided you can get through this fight, you’ll rescue Mel and she will return to the Workshop. 

    Rewards For Rescuing Mel

    The most obvious reward is that Mel will return to your workshop. Which allows you to spend the oodles of resources that you will have likely accumulated since she went missing. 

    But, alongside that, Mel will also have a new item in their shop that only costs one Nacre. So, you know, totally not a gift at all. 

    This item is a mod called Gratitude, which essentially mirrors the effects of the Ground Healing assist. Granting you an additional hit if you stay grounded for long enough. It’s a pricey mod, and one that’s a little redundant if you are using the assists. But, all in all, a good mod to have nonetheless. 

    MIO: Memories In Orbit
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    Callum Marshall
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    Callum is a seasoned gaming managing editor for a number of publications and a gamer who will always try to shine a spotlight on indie games before giving AAA titles the time of day. He loves nothing more than finding an unearthed early-access title and seeing what they have to offer. Plus, he’s even got a tattoo of The Traveller from Journey and a Junimo, so you know that love for indies is legit! Callum has been around the block within the gaming industry, working as an Editor-in-chief for a number of well-respected gaming outlets; he has worked as a games tester, he has gaming podcast experience, and he has worked in gaming PR. Basically, you name it, and Callum was probably there or somewhere on the periphery. Outside of gaming, Callum loves skateboarding despite his immediate family telling him to grow up, and he is also known to watch the British sitcom Peep Show on repeat and will go toe-to-toe with anyone on Peep Show trivia.

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