PROTOCOL PASS GUIDE
Battle Pass System Breakdown for Arknights: Endfield
Last updated: 2026-02-18
About the Protocol Pass
The Protocol Pass is Arknights: Endfield's seasonal battle pass, running for the length of each numbered version (around six weeks). It splits into three parallel tracks: a fully free Basic Supply claimed by every player, a paid Originium Supply premium track that refunds its own cost in pulls if you finish the season, and a cosmetic-only Protocol Customized track for collectors. Reaching level 40 on the main track is the goal.
Pass EXP comes almost entirely from daily Activity Points (2,000 EXP for hitting 100 points) and weekly missions. The math below shows which track is worth your money, how to schedule Pass EXP without burning out, and how Vacation Tags can keep you on pace if you miss a day. Pair this guide with our daily & weekly checklist for the actual task list.
* What is the Protocol Pass?
The Protocol Pass is the battle pass system in Arknights: Endfield. It has multiple reward tiers that can be unlocked through daily and weekly objectives.
Track Comparison
The free track available to all players. Contains essential resources and materials.
Premium track purchased with in-game premium currency. Can be purchased repeatedly. Refunds the full cost upon completion.
Highly recommended even for F2P players. Completing the pass refunds the full Origeometry cost, making it essentially free if you play regularly.
Paid premium track with exclusive cosmetics and extra rewards.
Only worth it for players who want cosmetic items. Not necessary for gameplay progression.
How to Earn Pass EXP
Complete 100 Activity Points daily for 2,000 Pass EXP
Larger EXP rewards from weekly objectives
Doubles Pass EXP when used (earned from missed days)
Pro Tip: The most efficient way to level your Protocol Pass is to hit 100 Daily Activity Points every day. This alone provides 2,000 Pass EXP daily. Check our Daily Checklist for a quick rundown.
Weekly Missions: Reset every Monday at 4:00 AM server time. View reset times →
Tips for Maximizing Your Protocol Pass
TL;DR - Should You Buy It?
Related Reading
Plan your spend for the current patch with the Version 1.2 Resource Budget, or read the Version 1.2: At the Wake of Spring patch notes for the new Wrothful Tide pass theme. F2P players should also see the F2P Resource Guide and Gacha Guide before committing to Originium Supply.
Frequently Asked Questions
What is the difference between the free and paid Protocol Pass tracks?
The Protocol Pass has three tracks running in parallel. Basic Supply is fully free and unlocks alongside the season — every player claims its rewards as they earn Pass EXP. Originium Supply is the paid premium track that costs Originium Prime; it grants additional Oroberyl, pull-ticket fragments, and most importantly refunds its own purchase cost in premium currency once you reach the top tier, making it effectively free for active players. Protocol Customized is a higher-priced cosmetic-only track aimed at collectors — it adds skins, weapon coatings, and base decoration sets but no gameplay-impacting rewards.
What is the Protocol Pass level cap and how long does a season last?
A standard Protocol Pass season runs the length of a numbered version (roughly six weeks) and caps at 40 levels on the main reward track. Each level requires 5,000 Pass EXP to clear, with a soft target of one level per two days of consistent dailies. Once you reach level 40, an Infinite track unlocks for a small bonus Oroberyl trickle at every additional level. Unclaimed rewards at season end are forfeited — there is no carryover, so prioritize the season-end log-in if you bought Originium Supply.
What currencies and rewards does the Protocol Pass actually grant?
Across the three tracks you can earn Oroberyl (the gacha currency), Origeometry premium-pull tickets, Operational EXP for character leveling, ascension materials, Sanity Boosters, and on the cosmetic track a full character skin plus weapon and base decorations. The Originium Supply track is calibrated so its Oroberyl plus Origeometry payout exceeds the premium currency you spent to unlock it, provided you reach level 40 before the season ends. F2P players who only claim Basic Supply still pull roughly 12–15 free Oroberyl bundles per season.
How do I earn Pass EXP fastest?
Two sources dominate Pass EXP intake. Daily Activity Points: hitting 100 Activity Points every day grants 2,000 Pass EXP, which alone is enough to clear most of a 40-level season. Weekly missions: complete the seven weekly objectives early in the week for a 15,000 EXP block — never let a week pass with weeklies unclaimed. Use Vacation Tags to double Pass EXP on catch-up days if you missed reaching 100 points. Story chapters, event quests, and one-time milestone tasks add bonus EXP but are too irregular to plan around.
When should I buy Originium Supply for the best schedule?
Buy it within the first week of a new version. Originium Supply rewards are retroactive — every Pass EXP you have earned since the season started instantly unlocks the corresponding paid-track rewards the moment you purchase. Buying late costs nothing extra in currency but increases the risk that real-life schedule slips prevent you from reaching level 40, at which point you forfeit the refund mechanic. If you cannot reliably hit 100 Activity Points most days, skip the paid track entirely and stick to Basic Supply.