i ill quote something i did read on reddit from all places:
"I’ll get this out of the way first and foremost.
I saw an interaction between Keofox and a redditor about the wording of the Stalingrad campaign.
In the announcement, it was said that the campaign would still be available to everyone, with some levels locked, but still completely free.
The way it was worded was definitely incorrect, and was misleading. You’re welcome to criticize that. That is not at all accurate in my opinion.
Now, we can get to the part where you all scream at me for making a good point.
A long time ago, Darkflow promised to release four entirely FTP campaigns. They kept that promise, and they’ve released 4 entirely FTP campaigns for all of us to enjoy.
Now, they are releasing a fifth campaign, which they never promised us.
Stalingrad is being released as a separate campaign, and is being monetized differently. You are meant to pay $30, and in return can play the campaign with all of the mentioned features.
FTP in Stalingrad is not truly FTP. It is misleadingly referred to as FTP, but it is in fact a free demo.
It is a demo for someone who has not yet purchased the campaign to try it, and then decide whether or not it is worth them spending $30 on it.
They have no intentions of anyone playing Stalingrad for free entirely. They want you to pay for the campaign. They locked levels and left progression slow to make you want to purchase it.
And you know what. They have every right to do this, whether you like it or not.
The community has received all promised campaigns, and they are planning to continue updating them.
Stalingrad could be a bot utopia going the paid route, or it could be rather successful. Who knows.
You’re welcome to complain about the monetization, but don’t think they owe you anymore free content outside of updates for current campaigns. They made no such promises.
Short version
Announcement article= Misleading
Stalingrad FTP= Demo
Stalingrad as a whole= Paid DLC."