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PC game version/Arc tool shown in HUD as "Unbound" ....
When the mission start loads to use the arc tool to energize the cores the pilot is shown holding one of the two regular weapons (shotgun) and the HUD showing the arc tool as "unbound" key access.
Restarting/replaying the mission to get the arc tool or verifying the game files doesn't help. As such I can't proceed with the game. This is my 2nd play through and didn't run into this bug/problem with the initial play through.