Day of Fire Tears – “All 5 Missions”

I have 3 questions and one request:
1) What is this campaign?
2) Where can I find and download it?
3) How do I load campaigns, maps, and save files into the game?
4) Could you please send me a save file for the last mission of the last campaign? I've been struggling with the fourth mission for 2 days now! (look for Mage - Haven, mission 4 of campaign 6)