The chosen of the God of Trickery —— the "Cursing One", Vérilig, was equally tricky. The power of the twisted twins controlled the Wind of Magic on the battlefield, causing incurable curses and dark destruction.
The only two reasons that the Chaos Alliance hadn't been able to defeat the United Army were Ulrick's Holy Fire and the unfriendly winter to God of Plague's spreading love.
If it were the spring of resurrection... perhaps the entire city would have blossomed.
Carl was very clear about this, so he hoped to end the war before spring arrived. Although the Midheim Dimension was relatively high and spring would arrive slowly, it was not impossible. To completely eliminate the Chaos Alliance before then was an impossible mission, let alone the fact that Achane, the chosen one of legend, had not yet appeared.
Yes, just like in an RPG game, you probably have to defeat the Four Heavenly Kings before the final BOSS will jump out and fight with you.