Use the trajectory indicator to plan out how to get past the enemies and reach the goal. Press space to launch, once you launch, you can't control the cube until it returns to the starting point. A new enemy spawns every time you score a goal, the maximum amount of enemies is 5.
There are a few bugs, the trajectory system is a bit laggy and not exact, and sometimes you will hit an enemy, return to the starting point, and then keep moving I am working to fix these issues and any suggestions are greatly appreciated!