Act 4: The Test of Endurance
Main Objectives:
Survival: The difficulty curve rises significantly in Act 4, pushing you to enhance your defenses and Path of exile currency optimize your build. The act is centered around surviving increasingly deadly zones and tougher enemies.

Boss Encounters: The final boss of Act 4, The Shaper, is a harrowing multi-phase fight that requires quick reflexes and precise control of your character’s mobility. It's a good test for mastering all the mechanics you've learned.

New Zones: The act introduces dungeons and time-limited challenges where completing objectives under pressure gives extra rewards.

Rewards:
Endgame Access: Completing Act 4 unlocks the first layer of the endgame systems, including access to advanced crafting.

Powerful Buffs: Additional rewards will include new ways to enhance your stats, elemental resistances, or special abilities that you’ll need for future battles.

NPC Rewards: Expect new allies who can help you craft items that unlock new powerful buffs for your gear.

At this stage, you’re ready to POE currency for sale confront the most challenging areas and start focusing on gear optimization.