Task That Is Tough to Complete, but Not Impossible

This page is the CodyCross answer for the clue below from Department Store, Group 515, Puzzle 2 (Photography Studio).

Question is: Task That Is Tough to Complete, but Not Impossible

and the answer is: TALLORDER

Word Meaning:

TALL ORDER — (originally US, idiomatic) A big job; a difficult challenge.

Definitions from Wiktionary.

Task that is tough to complete, but not impossible — CodyCross Answer | CodyCross Solutions