Marathon Mastery Skins Boost
Mastery Skins Boost
FULLBOOSTS / GAME SERVICES
Buy a Marathon Mastery Skins boost to get the Shadow Index skin on your chosen Runner and skip the slow, demanding challenges. A verified player works through the shell's mastery list on your account.
What you get
- Selected mastery challenges completed, or full mastery for the shell you choose
- Your shell's Shadow Index mastery skin, now yours
- Codex progress that follows from each Runner's challenges
- Extra XP from the runs and extractions involved
- Movement toward titles, emblems and other cosmetics
Mastery challenges are shell-specific Codex goals. They call for precise ability use, kills under set conditions and successful extractions while under pressure. Finishing them earns permanent cosmetics that stay with your account from season to season, which is why many players treat mastery as a collection goal tied to one Runner.
Requirements
- A working Marathon account you can log in to
- The Runner shell you select unlocked
How to set up your order
Choose your Platform, then use the Difficulty selector to decide the scope. Pick Specific challenges when only some entries are left, and name the unfinished ones using their in-game challenge names. For Sentinel, examples are Not so Fast, Impenetrable, Riposte, Posted Up and Information Economy. Pick Full completion when you want everything done; the shell choices are Assassin, Destroyer, Thief, Triage, Recon, Vandal and Sentinel. Check the shell's checklist on your account first so you only pay for what is missing.
The work is carried out by a verified player on your account. Login details go through the encrypted form on your order page, never chat, and you should stay logged out until the order is done. Extras lists Express and Super Express for higher queue priority, and timing is confirmed in order chat before work begins.
Related services
- Marathon Unique Weapons for weapons to go with your new skin
- Marathon Materials for Sale for crafting supplies
- Marathon Weapon Mods For Sale for attachments
- Marathon Credits for purchases between runs
Frequently asked questions
Which option suits a shell I have partly finished?
Specific challenges lets you pick the entries still open by name. Use Full completion when you want the entire mastery goal for that shell.
Can I choose Sentinel?
Yes. Sentinel is in the full-shell list and has its own individual challenges.
What must be unlocked first?
The Runner shell you select must already be on your account. Its mastery checklist shows where the work starts.
How long does a mastery order take?
It depends on the shell and how much is left. Timing is confirmed in order chat, and Express or Super Express gives higher queue priority.
Does the skin stay with me after a season ends?
Yes. Mastery cosmetics are permanent and carry across seasons.
Is there a warranty?
Yes, after your order is completed: 8 business days, or 2 business days when a top-rated booster completes it. Some top-rated boosters offer their service without a warranty. Your order page shows exactly which applies as soon as a booster is assigned; if it shows no warranty and you want one, ask support for a different booster before the work starts.
Is it safe?
FullBoosts assigns verified players and protects piloted-service logins with an encrypted form on the order page. Only you and your assigned player can access those credentials while the order is open; they are erased when the order closes or a dispute is opened. Keep logins out of chat. Where Self-play is available, you play together and keep control of your account. Every delivered order has a 72-hour review window.
How ordering works
1. Choose your service
Select your options and review the total at checkout.
2. Meet your player
FullBoosts assigns a verified player. Agree the details in order chat and follow progress in your dashboard.
3. Review the result
After delivery, you have 72 hours to confirm the work or select Report a problem. If you take no action, the order completes automatically.
Need help? Use live chat in the bottom-right corner or email.
Terms and Refund Policy
Guides for Marathon
No written reviews for this offer yet. Customers can review an order once it is completed.
Customize your service
Boosting options
Vandal
Platform
Assassin
Destroyer
Thief
Triage
Recon
Sentinel
Extras
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