Updaam

Morning: Find three Eternalists in the alleyway (I22/J22), two in the Candy Club (H22) plus two more through the back, up to seven in the Library plaza (I23) that may move inside, two digging for a Trinket (H24), twelve inside the Library (I24/I25), two on the back patio (H26), six in the streets east of the Library and around your apartment (H25/I25), six along the south road (J23/J24/J25), and eleven in Dorsey Square (I26/I27).

Noon: Encounter two Eternalists in the street (H22/I21), one in the Candy Club (H22) plus two more through the back, seven in and above the alley (I22), six Eternalists and two Sensors in the plaza (I23), one behind Otto's Workshop (H26), three in the southwest (J23/J24), twelve around your Apartment (I25/I26), one on the bridge to Charlie's Mansion, and thirty-three in and around Charlie's Mansion (Condition Detachment) across multiple floors. After crossing the bridge to Condition Detachment, most (if not all) Eternalists in Updaam will respawn (be brought back to life at a checkpoint after death).

Afternoon: Face three Eternalists in the street (H22/I21), two near the alley (I22, one above, one below), thirty-five in the plaza (I23), one east of the Library (H25) with five landmines (two on ground, three on roofs), four along the south end (J23/J24/J25), five south of the Library plaza, one in the apartment west of yours, and two in Dorsey Square. Claiming your present in Dorsey Square triggers six additional Eternalists (one disguised as a statue, two on rooftops, three inside an apartment north of yours). Entering the Moxie and taking the challenge triggers eight Eternalists at the entrance upon completion.

Evening: Locate three Eternalists in the street (H22/I21), two near the alley (I22, check the roof), six Eternalists and two Sensors in the plaza (I23), one Sensor (turret) in a hallway north of the plaza (I24), one Eternalist east of the Library (H25), five Eternalists, one Sensor, and two Turrets along the south paths (J21/J22/J23/J24/J25), two Eternalists, one Turret, and one Sensor south of the library (upper J23/J24/J25), with three additional Eternalists sometimes appearing on snowy hills. Find three Eternalists in the streets and alleys around your apartment (I25/I26), and one Eternalist in the apartment just west of yours across the rooftop. There are three Eternalists and one Sensor (turret) in Dorsey Square (I26/I27). Dorsey Manor contains forty-four Eternalists, Aleksis the Visionary, and ten landmines. If you sabotaged Egor's experiment, Egor the Visionary is also in Dorsey Manor. If you completed 'What Wenjies Want' and lured Wenjie to Updaam, Wenjie the Visionary is also in Dorsey Manor. Entering Dorsey Manor seems to respawn most (if not all) Eternalists within the main Updaam area.