Complete Acts 1–5, reach Oracle's Abode, and finish the Sapphire Tablet quest. This provides the bare minimum quest completion needed to Last Epoch gold eventually unlock all passives and idol slots. You'll enter the Monolith around level 34–40, which can be rough early on, but your experience gain skyrockets. Later, when you obtain a Temporal Sanctum key, you'll return to Act 9 to...