Green Zero

"W, A, S, D" - movement.

"Arrows" - shooting.

"E" - the action button in the menu.

In the game there are potions that give super abilities there are types that give the ability to shoot and there are those that are a shield. 

The potion red - shoots a red bullet.

The potion yellow - shoots 4 yellow bullets diagonally.

The potion green - shield.

The potion purple - shield.

After gaining 100 points, the potion purchase menu opens, you can buy something with the "E" button, but you can press "Escape" and the menu will close.