Revolver was the first place my partner and I went after arriving in Oslo from the airport. I had the one vegan menu item - the vegan burrito. It was filling and flavourful, albeit a slightly too salty for my tastes. The server was really friendly and helpful to translate the menu in English for my partner (a non-vegan). The restaurant has free wifi, as well as a back area to sit outside (although unfortunately the sitting area is also near the garbage cans that are hidden by a fence but that didn't stop the smell). The inside space is relaxing with large windows that look out on the street. It was definitely nice to find a place that was vegan-friendly.
Cons: more vegan items please!