People get worked up over the gnostic gospels as if they've been hidden. There's been copies of them around for centuries. When you actually sit down and read them the lameness of them is revealed.
I've read a couple of the gnostic gospels in their original Greek some years ago. They are simply a poorly developed attack on Christianity that began shortly after the Church was founded. Basic gnosticism says: "Spirit good, body bad." So gnostics will not offer any help as far as kindness towards others. Their goal is not unlike the escapism of some eastern religions.
They are deeply offended at the belief that in Jesus, God suffered… they have Jesus Spirit bailing out before the suffering happened leaving only the man part of Jesus to suffer.
And in the Gnostic Gospel of Peter …jesus at resurrection has a normal sized body but with a giant head and the cross walks behind him in procession.