Since this phrase is not a standard idiom or a specific mainstream book/movie title (it sounds like a mission objective in a game, a project milestone, or a personal development framework), I have interpreted it as a
Whether this refers to finishing a brutal level in a video game, shipping a nightmare project at work, or surviving a personal trial, reaching the "complete" stage while still in the chaos is a unique kind of victory. Literally, the phrase is an oxymoron. You usually finish something after you leave the thick of it. But in reality? We rarely get a clean exit. in the thick of it complete
That is "In the Thick of It Complete." We are sold a lie that success is clean. That entrepreneurs sleep on silk sheets. That athletes win with perfect form. That artists finish their masterpieces in a silent, inspired studio. Since this phrase is not a standard idiom