Creepy, and depressing. Both Baker and McCoy did an awesome job, though. I haven't heard Project: Twilight, so I suspect I'm missing bits(I didn't realize this was a sequel until I was into it).
This is the type of story that I don't think Classic Who could have done. I suspect current Who might have trouble, come to that. I can't say I enjoyed Project: Lazarus, but it was certainly a fascinating listen. For that, and for the excellent voice talent, I give it 4 stars.