急著,目光閃急,如線穿空,劍貫重甲,清利而直銳也*
He who are fast (the eyes), a fast shiny gaze, as a line piercing the sky, a sword piercing a heavy armour, sharply, thoroughly and incisive.
眼要毒,心要狠
The eyes must be fierce, the heart ruthless.
At least three characters may be expanded: 之, 奪 and 懼. Indeed, since 之 originally meant "to come out", one can wonder what rule then applies to what comes in. 奪 and 懼 are interesting because while not being the most common way to express their respective intended meaning they both contain the radical 隹. It seems then that they may have been chosen for such purpose.