Key Fieldwork

Overview

Key Fieldwork is the final tier of Fieldwork in each act of Episode: Revenant, after Minor and Major Fieldwork. Open it from Eido's Fieldwork tab in the Last City. It unlocks once all Major Fieldwork for that act is complete: five in Act I, and two in Act II (Tonic Experimentation on Nessus and the Moon).

Act I

A multi-step chain that includes a visit to Widow's Court and returning laboratory equipment to Eido's lab.

Act II

Act II begins with the Grave Robber quest, which leads to the first Tomb of Elders run. Bring the Autoclave from that run back to the Tonic Laboratory in the Last City and install it at the marked machine to unlock Act II Fieldwork. Speak to Eido in the Tonic Laboratory and take Key Fieldwork, whose objective is to conduct Fieldwork at the Tomb of Elders. Rewards are a Tomb Reaper upgrade, which gives more rewards from bonus objectives in Tomb of Elders activities, and a Medium Tonic Reagent Sack.