Zone of the Enders: The 2nd Runner HD Edition

After you get to Fort City, and among the heap of rooms below, to which you go down by elevator, you find another elevator, you will find yourself in a hall with multiple columns that either touch each other or diverge. Your task is to let the enemy get under these columns so that he is flattened. The task is very simple, practically a plot trophy (I got it by accident). Carefully lure the enemy between the columns, and quickly manage to rise or fall.