Budget Atlas Strategy for Leveling and Currency Farming

This strategy is aimed at solo completion of the Atlas without purchasing maps, focusing on Path of exile currency rapid progression using Orbs of Horizon and enhancing map drops through rarity upgrades:

Prioritize completing normal and cheap unique maps, alongside invitations and defeating Searing Exarch/Eater of Worlds bosses for progression.
Utilize Chaos orbs for completing inexpensive unique maps (1-5 Chaos each) to efficiently gain 120 points.

Alch & Go Atlas Strategy for Low Budget Builds

Once basic maps are completed and expensive unique maps are tackled, transition to this strategy:

Basic Skill Tree (54 pts): Establishes a foundation for efficient map progression.
Shrine & Harbinger (76 pts): Utilizes shrine buffs and additional Harbinger drops.
Expedition (117 pts): Focuses on currency farming via logbooks and Expeditions.
Blight (117 pts): Implements tower defense strategies suitable for non-meta builds.
Legion (115 pts): Increases drops from Legion encounters.
Ultimatum (120 pts): Maximizes rewards from Ultimatum encounters.
Searing Exarch: Preferable over Eater of Worlds for POE currency for sale enhanced staple currency drops.