Alpha 4 features more content, and actual "things" to do if you want to.
Stuff I can't tell about
There stuff are "secrets" to be found by the player, so I can' t tell or show much about it.
There is that one huge map you'll have to find by yourself, and do something here. Its a unique map, only one per game. Find it and do something for two achievements (later will be part of the plot and win conditions).
There is that creature that lives in the sewers. Its a unique creature, only one per game. Kill it for an achievement.
Those parts are done.
The player wil also have the possibility to meet a certain "someone", in a specific "place" and will get the choice to give help to this "someone" in exhange for "avoiding some kind of trouble", but that will put you into "some other kind of trouble". Eh.
That is not done yet.
Stuff I can
There are several new things, major or minor, to look for in this screen...
Polished sewers maps.
What you can't see is the sewers water animated and the junk thing floating up and down. Useless but fun graphics improvements.
Not much new about subways I'll try to make them a bit more interesting.
Hey, I wasn't supposed to show that one...
End of post.