@acad Would you be able to update node to version 6.14.4 which we currently support?
What version of npm are you using? You can check with
npm -v. Make sure you’re using version 3.10.10.
Finally, what are you npm installing? Is this the codecombat repo?
There may also be an issue with the git url if you are behind a proxy. Check out this reference: https://stackoverflow.com/questions/31744852/npm-install-giving-error-while-accessing-git-url
I hope this helps.