20 Taken have been drowned, electrocuted, or dispatched by some other indirect means.

You drank 'em bot' up.

Oh, so THAT'S what happened.

You shone a light upon this night of otherworldly fiends.

You wiped out four Taken with a single flare.

You listened to Hartman's recordings.

You made the train engine run out of steam.

You took out two Taken with a single barrel.

You destroyed the bulldozer.

You capped 100 Taken with the revolver.

You have found 25 coffee thermoses.

You have discovered 25 manuscript pages.

You finally managed to make that phone call.