As I write this, I've gone through approx. half of the film in the clean up process. Because of how the film was scanned and initially encoded, I've had to transform it in order to better visualize the dirt, scratches, etc; so you can ignore the greenish appearance of the cleaned up clip.

As you can see in the frame above, Lois' hair has a red appearance, but those alterations introduced by the transformation process can be balanced later (see below; not a final image).

In terms of complexity, the film is mixed. Much is shot of 2s (meaning each picture repeats before the next picture is shown). This is ideal for clean up as auto filters make less errors. But the film has many small details shot on 1s (e.g., gun fire), which has to be cleaned manually frame by frame.
Once initial clean up is finished, there are a number of individual frames that will need to be fixed with more care in photoshop (e.g., spliced frames). After that will be the color work, then soundtrack (which does not align with the film at all, as you'll see/hear from the video), then fin!