How do you progress to the last little area? Prison I think?

[GarryA]

I'm at the last stop trying to cross the river and it keeps telling me there's more to explore. I have the entire map explored, there are no more story/boss icons. Any idea what I'm missing? Is it not in the game yet?

[Devou]

Hmm... sure about the icons? Some story parts are affected by day/night... Well currently you can't get over the river, I only get the message “in development”...

[DGAFPolar]

Once you trigger the "future development" you will see that 1 or 2 new areas appear on the map (the green diamonds). They will be grey until you're underground. One is the end of the lab mission (this may not be there for you if you already did it, I did it after the bridge and so i'm not sure if it's doable before, lol). The other is the underground and you enter to the left of the grey marker in a cave. I believe it's the underground bdsm cave. After that you'll have all special followers and all your missions will be done. The bridge is for future stuff and the top center of the map