Hyperion's Dirge Genshin Impact quest guide: Location and achievements revealed

sportskeeda.com:

The Hyperion's Dirge quest series consists of four short quests in Genshin Impact that primarily revolve around short combat trials.

Genshin Impact players should collect several Key Sigils of each type in Enkanomiya before attempting the Hyperion's Dirge quest series. Otherwise, they will be unable to proceed, as inserting them in specific locations is mandatory.

Aside from that, players with weak teams may wish to lower the World Level as they're required to beat some enemies in 30 to 60 seconds to proceed. There are three trials:

Travelers should teleport to the Teleport Waypoint near the center of Dainichi Mikoshi in Enkanomiya to start the Hyperion's Dirge quest series. Once they do that, they jump off west of the Teleport Waypoint and turn around toward a wall with two torches. The player should essentially be underneath the Teleport Waypoint.

Take any Pyro character (Amber is a free unit and will suffice) and light up the two torches near the wall. Upon doing so, a part of the wall should disappear. Head through it and talk to Aberaku to start Narrow Inquiry. That is the first short quest for the Hyperion's Dirge quest series.

The first quest requires players to go a little northwest of the center Teleport Waypoint found in Evernight Temple. The player must use several Key Sigils (obtainable outside of this quest series) and then talk to Aberaku.

They will then do a 60-second trial against one Rockfond Rifthound and two Rockfond Rifthound Whelps. Talk to Aberaku to finish this portion.

Genshin Impact players will now have to do Serpent Heart's Inquiry to proceed in the Hyperion's Dirge questline. It also involves the player using Key Sigils at a location before talking to Aberaku. This time, it's near the Teleport