Actually, it looks like this is kind of tracked with 'eldritchTentaclesFought', but that is resetOnAscension
This is (I think) for tracking the Tentacle Tickler Trophy
And there is a boolean '_eldritchTentacleFought' which is to check if we have fought the tentacle from the Science Tent.
Perhaps we need a new property for '_eldritchTentaclesFoughtToday'