τυπτόμενον: So Dawes for τυπτόμενος. Bergk's κρυπτόμενον is not likely. The whirlwind drags the victim along while he is pounded by the storm-driven stones. The rain is an army (imber edax), the wind is a mob (Aquilo impotens).
πρόσωπον: The πρόσωπον is the πρόσωπον τηλαυγές of the treasure-house made luminous by joy (P. 3.75). Mezger: “thy countenance” (of Thrasybulos) after Leop. Schmidt. We should expect τεόν, and we need the τεῷ that we have.