Note that while the mode was called Lost Ark Gold Boss Rush in the Korean and Japanese versions of Lost Ark, the mode is called Trial Paths in the official English localization of Lost Ark. But most players still refer to it as Boss Rush.

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Once you start Boss Rush mode and leave the battle waiting area, you can't change your Skills, Battle Items, or Equipment, so make sure to fully prepare before starting. You can't use potions either, but if a party member dies, you can revive them after waiting for a little bit.

When you just finished a stage, before moving to the next stage, you can interrupt your run with the UI on the top left part of the screen.

Furthermore, there are three different Boss Rush modes you can take on: Corridor of Silence, Corridor of Trials, and Corridor of the Sun. You need the corresponding ticket to challenge a specific Boss Rush.

Lastly, when you're nearing the time limit of a stage, all players will get some buffs to help you out. However, the buffs will disappear when you move on to the next stage. The higher the stage you reach, the bigger the rewards you'll get at the end.

Rewards in Boss Rush mode most notably include Skill Gems. These are very important in Lost Ark's endgame as they have very powerful passive buffs, such as skill cooldown reduction.

Common requirements needed to unlock Boss Rush (Trial Paths) in Lost Ark Progress a character to Level 50. You must be at Item Level 802 or higher. Have at least one of the three different tickets needed for a Boss Rush run. These tickets drop in Chaos Dungeons. You must have cleared "Adventure Quest [Guide]Boss Rush" to unlock the mode.

If the quest "[Guide]Boss Rush/trial paths" isn't unlocked yet, it means you need to complete the Main Quest Ealyn's Gift first cheapest Lost Ark Gold, a North Vern Main Quest line which is found in Vern Castle.