Ich war etwas skeptisch ob es aus der Bim heraus gut funktioniert und ob man nicht viele Hacks verpasst. Aber es ging überraschend gut. Leider war manchmal aussteigen unumgänglich, oft aus eigener "Dummheit" (noch schnell einen Hack bei einem anderen Portal und dann geht sich das Mission-Portal nicht mehr aus), manchmal wegen dem GPS oder der App (Lag oder Absturz). Das Mosaik selber ist sehr gut gemacht, die Hacks weit genug auseinander.
Die Wegführung hätte ich etwas anders gemacht und z.B. die Tunnel vermieden, aber auch dort ging alles gut.
Ein Hinweis (in Addition zu Burli): Nach den Umbauten am Johann-Nepomuk-Berger-Platz ändern sich die zu nutzenden Bims wiefolgt:
Statt im letzten Schritt die "2er bis Rathaus" zu nehmen nimmt man die 44er bis Johann-Nepomuk-Berger-Platz und von dort die 2er bis Rathaus. Das Mosaik kann trotzdem unverändert gemacht werden.
English: The last step (Bim 2 to Rathaus) changed permanently after construction work. Instead take the 44 to Johann-Nepomuk-Berger-Platz and from there take Bim 2 to Rathaus.
It's my mosaic so take my comment with a grain of salt, but looking back I liked it. It's long and I'm not sure if it's doable in one take. I did split it up into 6 parts, which was very manageable. Around the first district missions are hard to find because there are so many around. It's good to look up the starting portals beforehand and get close to make it easier to find the mission.
The mosaic is 24/7 as even the portals in the Türkenschanzpark can be reached from the outside (and I think they don't close the park anymore).
A nice mosaik which I enjoyed even though I knew most of the places already.
Some missions are rather long, given that some parts of the district have a low portal density. In some parts the way goes backwarks or requires hacking portals you already passed. I used a heat sink to hack again and not waste a few minutes.
Nice Mosaik overall. Going by bike/car is not recommended as many ways go through one-way streets. Sometimes, the back and forth is a bit irritating.
One portal was not reachable from the street and I had to enter a backyard, which is fine at daytime but might not be open at night. With a little GPS drift it could be doable from the outside, but I wasn't lucky.
Nice Mosaik which leads you through the first district of Vienna. Missions are sometimes a bit chaotic, requiring to hack portals you already passed. Try to only hack the next portal in line or you'll need more time or Heat Sink Mods.
Sometimes, Missions are very short (one Mission in particular required no walking at all). Good for collecting missions, bad if you want to move around and see things. I also disliked that in the fields of portals, which was already a lot, additional waypoints where added, making it hard to understand what to do next.
The mosaik took me about 2 1/2 hours by foot. Don't use a bike as you won't get far in the first district.
Nice Mosaik. In the beginning missions are a little long. It took me a little over 4h to complete it. As always, biking would be not a good option as one-way streets are on the way and a few times big roads must be crossed.