The causes of this, which we were able to fix, were:

Potion: Originally, the player only received the first potion after winning the 1st Area (Entrance Hall). However, this potion makes a big difference at the beginning of the game.
Change: The change we made is to give Dandy Ace a potion from the beginning of the game.

Blueprints: One element that was always frustrating in Dandy Ace was losing Blueprints when dying in a run. This caused several problems, such as making it take much longer than necessary to unlock and find new cards.
Change: Now the player no longer loses Blueprints when losing a run.
Nnif-tar: Nnif-tar is a mechanic that allows the player to choose a card and increase its level. The idea is not to make the game so dependent on RNG. However, Nnif-tar originally took a long time to unlock.
Change: Nnif-tar starts unlocked from the beginning of the game.
More balancing changes (card damage and costs) will come in future updates
Thank you very much!