STEPS :-

FIRST GET SOME CASH:-

1) start cheat engine
2) load the game
3) now select the browser text
6) search gold
7) replace all with cash
8) now buy ACADEMY 1 or if you already own one store it
9 now change 4 byte to array of bytes
10) now search :- 31 30 30 37 00 00 00 00 00 00 00 00 00 00 00 ( soldier 1 )
11) now selec all the results and click on red arrow
12) select all the results and change the value to --------->>> [ 31 33 36 34 ] ( HAMMERHEAD MECH )
13) now speed up the unit and when it gets placed on ur base visit ur neighbour
14) now refresh and ur unit will stick enjoy