Echoes of Aincrad is a single-player game set inside a fictional MMO — and the partner system is how it keeps the "other players" of Aincrad alive around you. As you progress through the story you meet fellow adventurers, and quests let you take one partner by your side. The official description is direct about how much this matters: "Build synergy with your AI partner, adapt their tactics, and their equipment to create a team dynamic that turns every battle into a triumph."
What's confirmed
- One partner per quest — you choose a single companion to bring along.
- Unique support skills — each partner has their own kit, "each housing their own support skills."
- Adjustable tactics — you can adapt how your partner behaves in combat.
- Partner equipment — you customize their gear as well as your own.
- Story integration — partners are characters you encounter while progressing, which suggests the roster grows over the campaign.
Bandai Namco has not yet published the full partner roster. Returning characters like Kirito and Asuna appear in the game — whether the legends themselves are recruitable partners is one of the big open questions before launch. See the characters page for who’s confirmed.
Why your partner is half your build
Because exactly one partner accompanies you, the partner slot works like an equipment slot for an entire second character. The productive way to think about it: your partner covers your build's biggest weakness, or doubles its biggest strength.
Compensation pairing
A fragile, aggressive build (dagger or rapier, speed stats) pairs naturally with a defensive or healing partner — you bring the damage, they keep the run alive. This is the safer template and the one we'd recommend for Death Game Mode runs, where survivability is everything.
Amplification pairing
A self-sufficient tanky build (mace or one-handed sword with shield, endurance stats) doesn't need rescuing — it needs damage. An offensive partner converts your durability into time, and time into kills. Slower, but extremely forgiving.
Tactics: the dial most players will ignore
The ability to "adapt their tactics" implies a behavior layer — likely stances or directives (aggressive, defensive, skill priorities). Two early experiments worth running when the game launches:
- Boss openers: does a defensive tactic setting make your partner hold aggro long enough for you to land free skill damage?
- Stamina coverage: can you time partner aggression to cover the windows where your own Stamina bar is recovering?
If partner tactics interact with the HP/Stamina/SP system the way the marketing suggests, the difference between a default partner and a tuned one could be substantial.
Don't neglect partner gear
Partner equipment is explicitly customizable, which means partner power likely scales with investment. Towns handle weapon upgrades and item purchases — budget for two characters, not one. An under-geared partner in the late floors is a liability you equipped yourself.
Open questions we're tracking
- Full partner roster and recruitment conditions
- Whether Kirito and Asuna are playable partners or story NPCs
- Partner affinity/bond systems (a franchise staple)
- Whether partners can die or be downed in Death Game Mode
This page will be updated the moment Bandai Namco reveals the roster — and rebuilt with recruitment guides at launch. Meanwhile, plan the player half of your duo with the character creation guide and weapon breakdown.