The first half of Project: Lazarus featuring 6 and Evelyn is incredible, and features one of the most heartbreaking scenes with Evelyn in her entire run. There is some phenomenal character work and various plotlines that get picked up in the next story Arrangements For War.

After the first two parts, it swaps over to a 7th Doctor story, where it becomes a lot weaker. It's a very important plot piece to the overarching Forge arc, with what 7 does coming up later in the Main Range. However, the stuff that happens here is a big step down from the highs that the 6th Doctor half hit.