Pacifist Tank

WASD or arrow keys to move.

Shift to change the shield type.

Blue shield reflects the bullet directly to the shooter, but it is shorter and has less durability.

Yellow shield is longer, has more durability and deals more damage and reflects the bullet according to physical reflection rules.

At level 6 you acquire the ability to teleport to your cursor with left click.

To beat white enemies, use teleport and different shields to bounce their projectile two times before hitting them with it.