The mission itself was decent. Although, the fact that Javik is a very important character in the franchise and was (and still is if you don't have Legendary Edition) locked behind a paywall was an unethical move on Bioware's part, especially since Javik contributes way more to the story of ME3 than a typical bonus character.

In the mission you're fighting Cerberus troops revisting a location from the first Mass Effect game, and its set up to be a pretty standard wave shooter with flashbacks of the character. It's three and a half stars if I were to grade the mission alone, but I'm still sour by the paywall that EA and Bioware put up when I first played the game eleven years ago.