Set:Farm, Cowboy, Minigunner(It's not used), Medic, Ranger.

               

                                  1)Place 1 farm lvl 1.

2)Place 1 more farm lvl 2.

3)Place 3 more lvl 2 cowboys.

4)Upgrade 1 cowboy to lvl 3 and the firt farm to lvl 2.

5)Upgrade 1 more cowboy to lvl 3 and place 2 more lvl 2 farms.

6)Upgrade the last cowboy to lvl 3 and place 4 more lvl 1 farms.

7)Place 1 more lvl 3 cowboy and upgrade all farms to lvl 2.

8)Upgrade 2 cowboys to lvl 4 and upgrade 4 farms to lvl 3.

9)Upgrade the last 2 cowboys to lvl 4 and all farms to lvl 3. 

10)Upgrade all cowboys and 4 farms(one by one) to max lvl.

11)Place 4 more max lvl cowboys and upgrade all farms to max lvl.

12)Place ten lvl 3 rangers and place 3 max lvl medics.

13)SELL ALL FARMS AT WAVE 40.

14)Upgrade one by one all rangers to max lvl.

15)Place 6 more max lvl cowboys.