Well, no, he didn't.
There's not much to disagree with in The Apostles' Gospel. It is a simple survey of what the apostles preached to the lost in the Book of Acts.
What he disagreed with is the implication of that survey because it forces us to question the gospel as we present it and understand it today.
He didn't mention any specifics that are in the book, but he did present a couple common modern arguments that I would like to address.
This person wrote:
When a lawyer asks Jesus "what must I do to inherit eternal life?" Jesus responded, "What is written in the Law?" luke 10 Was Jesus lying? Was it too extreme? No he wasn't lying, YES, it was too extreme ...for any fallen human.