I have passed 15 levels. After reading your description, I understand why each level is 22 seconds. A great idea, but problematic to play, as players only have to dodge to complete the level. Wouldn't it be more urgent if you changed it to defeating a specified number of enemies?
In addition, if you defeat the enemy and you don’t have time to pick up the gold coins before you move to the next level, it’s better to add them directly to the player.