how do you get the other characters? can i only use the original 4 or do they get unlocked later on?

plz, update with full dlc, thx.

Please, update with DLC (2 more regions and many more heroes). Thanks

What version is it?
There was a major update on October 27, 2016. Which add support for controller, crash fixes and more...
http://store.steampowered.com/news/?appids=326670
Could you update it please?