Blue Laser

Blue Laser is the sixth and last Defense in ScrapTD and costs 200 bricks to unlock.

Strategical use
This defense gave a big help against ground enemies and was usually combined with Double Pain. Now it's not that useful anymore. Place some in the edges to be able to defeat Mobile Delivery, but not too much, it's ok if you take some damage from MD, Tesla Tower will remove them instantly.

Trivia

 * It cannot defeat Mobile Delivery when either Mobile Delivery is too high or Blue Laser is too low.