In Last Epoch, skipping the campaign on alternate characters is possible but requires some preparation and understanding of the game’s progression system. You cannot completely bypass the campaign on a new character without meeting certain prerequisites, but you can significantly reduce the time spent by using dungeon keys and strategic progression Last Epoch Gold.

Requirements to Skip the Campaign on Alternate Characters
1. Complete the Campaign Once: You must have finished the campaign with at least one character. This unlocks the ability to skip large parts of the campaign on alts.
2. Obtain Three Dungeon Keys: These keys—Lightless Arbor, Soulfire Bastion, and Temporal Sanctum—are essential for skipping the campaign. They are earned by completing Monoliths of Fate at certain levels (22, 45, and 55 respectively).
3. Reach the End of Time: When starting a new character, you progress through the early campaign until reaching the End of Time area (around level 15), where you can access the monolith system and start using your dungeon keys.

How to Skip the Campaign
1. Reach Lightless Arbor (Level 22+): Progress through the campaign until you reach the Ruined Era’s Council Chambers, then head to The Surface and north to The Shrouded Ridge to enter Lightless Arbor using its key. Completing this dungeon unlocks access to the Imperial Era.  
2. Enter Soulfire Bastion: In the Imperial Era, proceed to The Risen Lake and then to The Felled Wood to find Soulfire Bastion. Use the key to enter and clear this dungeon, which unlocks the Divine Era.
3. Complete Temporal Sanctum: Continue to Maj’Elka, then find the time rift at The Shining Cove leading to the Ruined Coast and the Temporal Sanctum dungeon. Clearing this dungeon advances you to The Radiant Dunes in the Divine Era, effectively skipping to chapter nine and unlocking all remaining quests, idol slots, and passive points.

Benefits and Limitations
1. Time Saving: This method skips large portions of the campaign, especially chapters 6 to 8, saving roughly a third of the campaign time.
2. Unlocks Idol Slots and Passive Points: Completing these dungeons grants all the necessary quest rewards, including idol slots and passive points, which are crucial for character development.
3. Not a Full Skip: You still need to complete some quests and dungeons; the campaign cannot be entirely bypassed since some rewards are tied to quest completion.
4. Leveling Options: You can also level by running Monoliths of Fate echoes from the End of Time, which provide good experience and rewards without completing the full campaign.

Additional Tips
1. Using dungeons like Temporal Sanctum to skip multiple chapters is the most effective shortcut.
2. Watching detailed guides and videos, such as those by content creators like Zizaran or HelpfulGamer, can provide step-by-step walkthroughs for this process buy Last Epoch Gold.

In summary, while Last Epoch does not allow a one-click campaign skip for alternate characters, by collecting dungeon keys through Monoliths and strategically progressing through key dungeons, players can bypass most of the campaign and quickly reach endgame content with all passive points and idol slots unlocked.