If the game is built around repetitions, make sure that the player can jump back into the game relatively quickly. Right now, every time EP runs out, the player has to go through multiple menus before they get back into the game. It's especially annoying when there is nothing to upgrade and the player is forced to spam-click through menus and animations before he can play again.
It is also an issue that playing with other characters makes this even slower as the player has to repeatedly choose the non-Apolonia character over and over again after each run. The game should remember which character the player has chosen.