Sorry Kat, I was at GDC and am just now getting back.
Yes! I believe in the build, If you open the Cheat Menu, you can use:
OccultGrantItem Tarp 1
You can use Page Up and Page Down to view the Narrative Node Progress.
And use the Cheat: OccultCompleteNarrativeNode {NodeId} to complete node progress if you need to skip around.
Sorry that you ran into that! There should be enough Tarps floating around, but it's easy to miss. Jam games can be funky!