Easy Level 4: Line Up

Lives: 10

Cash: $50

Begin by preventing creeps from getting to the other side.

Add a laser to fry them along the corridor. The laser also blocks the bottom exit.



Build the same pattern on the other side so that if creeps do get round they will have a hard time getting home.



Up grade the lasers and freeze one of them in position by double-tapping on it.



Right-hand laser upgraded to level 7.



Add in shock towers to slow down the faster creeps.



A missile tower is added and upgraded to level 6 for maximum effect.



Upgrade all the shock towers to level 7 then sit back.



As usual, no lives lost.