The game struggles with a core balance issue. Units start out way too expensive, but never get more expensive. So you have to make super specific early game moves to not automatically lose. Then as soon as you figure out what those moves are, it's impossible to lose. Since unit costs never go up you just cover the entire board in Rooks and everything dies as soon as it spawns.
Thanks for playing the game !
We realized those issues way too late during the Jam to have time to fix them unfortunately. The game basically turns into an Idle tycoon and it's almost impossible to lose lol. Future patches might come to better adjust the scaling of piece prices and enemy difficulty.