Duels are an asymmetric 1-on-1 fighting format taking place over (potentially) multiple in-game matches. It is intended for situations where one person challenges another for some gain, and is therefore the primary format used for determining the winner of Challenges (alongside its team-based variant, Skirmishes (see below)).
Whatever way it is decided, by circumstances or by choice, one fighter starts the duel as the "Attacker" and the other starts as the "Defender". As the duel progresses, the fighters may swap roles several times.
Within a single match of a duel, the general settings are as follows:
Match Format: Single
Time Limit: 10 minutes
Map: [Decided by the Defender]
When selecting ACs for a Duel, the Defender must select their AC and ready up before the Attacker. The Attacker is then free to examine the Defender's AC and select/modify their own AC based on this knowledge.
Once the attacker is ready, the fight shall begin, consisting of a single in-game match.
Once a match has been completed, its outcome decides what happens next in a duel.
If the Attacker won the match: The Attacker has gained the advantage in the duel. The Attacker and Defender must now swap roles and fight another match. With these new roles, the fighters start the process again from the beginning (i.e. the new Defender picks a map) and continue from there.
If the Defender won the match: The Defender has secured their dominance in the duel. The Defender wins the Duel.
The rules of a duel lead to certain consequences:
The only way to win a duel is to win a match while in the role of Defender
For someone starting the duel as a Defender, this could simply mean winning the first match
For an Attacker, this means winning two matches in a row at any point
There is no upper limit to the number of matches in a duel
In practice, it seldom goes above 3.
The longest-known string of matches in one duel was a duel between LuBaLu and Exception (with 8 matches)
Some specifics rulings:
Disconnect during a match is considered a match loss unless a rematch is agreed to. Network issues are an annoying inevitability, but deliberately disconnecting to "reset" a match is not allowed
If you suspect your opponent of deliberate manipulation, consider having a third party observe the match
Fighters are under no obligation to use the same ACs between matches, and can change them freely so long as the Defender selects their AC before the Attacker
A "ring-out" (falling off the map) is a valid form of elimination and does not warrant a do-over in a match or duel.
IT should be very difficult to time-out with a 10-minute time limit. If it still happens, contact a moderator.
Skirmishes follow the exact same rules as duels, with the following changes
The Match Format is Teams instead of Singles, as expected
The Handlers of the teams observe as spectators, as normal
The Handlers ALONE assume the roles of Attacker and Defender, and make all decisions granted to those roles