As of 3/20/2021

Level 1 Keycard:

Level 1 Card found right outside of the Class D area in the interrogation room.

Level 2 Keycard:

Level 2 Card found to the left of the hallway right outside of the Class D area.

Level 2 Card found in the Security Personnel spawn.

Level 3 Keycard:

Level 3 Card found in a control room above the area leading out of the main storage.

Level 3 Card found in SCP-343 "God"s containment cell.

Level 3 Card found in Security spawn.

Level 4 Keycard:

Level 4 Card found in the control room above the main storage.

Level 5 Keycard:

Level 5 Card found in one of the two buildings after going the down the slope to the left after coming through one of the doors to Gate A.

Level 5 Card found in the Chaos Insurgency spawn.

Level 5 Card found in the MTF spawn.