How does the underlined phrase "during the training mission" function in a sentence

question:

it's when i'm weary of considerations, and life is too much like a pathless wood where your face burns and tickles with the cobwebs broken across it, and one eye is weeping from a twig's having lashed across it open

answer to question #1: the simile that occurs in the text given (lines 43-47) is: ''life is too much like a pathless ''

explanation: a simile is a comparison of one thing with another thing and it is used to make a vivid description. it uses like or as. in the text, we can understand that the person is feeling weary of considerations and because of this, the person compares ''life'' to ''a pathless wood''.

answer to question #2: in this text we can understand that the word frost could mean anger, annoyance and bitterness, due to the fact that the person is stating that he/she is feeling weary of considerations and compares life to a pathless wood.

explanation: the word frost means coldness and something covered by ice crystals but looking at the comparison made in this text, we can understand that the word frost could mean anger, annoyance and bitterness, due to the fact that the person is stating that he/she is feeling weary of considerations therefore he/she compares life to a pathless wood.

whats the underlined word