Thank you for playing and reviewing the game!
As said below, we will work on the font and respawning both characters.
What do you mean by ´´hard to understand´´? Was it hard to understand the story or the gameplay?
About the store: you have three tries, so if you die, you respawn and get another chance. You can use your respawn to buy something in the shop. That being said, you can use your tries to collect money and buy upgrades in the shop, so it will be easier for you to reach the top and get the best ending.
Talking about the best ending. The theme represents itself in a lot of different mechanics, but also in the story.
In order to kill enemies, both characters have to jump on them. The characters have to work together to make their way home become easier (as told in the story),
Thank you for the constructive critisism.