What to do after tunnel boss?

[AestheticallyOP]

So I took care of the tunnel boss is there any other bosses to take care off? And where?

[slayerofgods]

Currently that would be the last boss.
There are 2 Bloats and 2 Seeker re-spawns, that only last stay in the game if the leave the heartbeat mass intact. then the Tank under the tunnel.
The tank will respawn at least every time you load the game but how many RPG launchers do you want to have, unless you are trading them. But you do get some experience on how to drop that type faster.

Once Zone 1 is back there should be more to deal with, Version 5 had 2 more seeker locations and one tank (in the Dev branch). But we don't know if more or new locations have been added.

[slayerofgods]

What you do with the game is your choice. Some folks like to see how long they can keep the game going. hunting, killing bandits, clearing the infected out, farming, trading, mining and making ammo. I have seen people say they are into multi hundreds of days.
Some people are gather all you can, build a base. and by day 50 say they are done and start a new game.