Knights in Tight Spaces: excerpt from my first run

I don't know much about the game but I'm familiar with the general idea: a grid of squares on a game board, ledges of instant death if you get pushed out of the map, team strategy, small scale battles, deck building, and choosing the rogue class.

How long is this game? I started a "story mode" run thinking this game is similar to Slay the Spire or Monster Train, but it doesn't seem to end. I don't mind that much since I'm jumping around to avoid damage and gradually taking out enemies.