i got an infinite loop lol, just make as many buzzsaws just underneath the ceiling then put turrets, sentinels etc around then the shells should get stuck but points still increase
good game, if u get into a ryhem of deploying troops then it becomes easy. i started with the second attack eg air, then launched all my infantry at the same time then added artillery then kept that proccess going. u cannot fail
tip: once you get the fortress, just build at least 1 row of them and place mg squad in centre one then either at's or assaults in the others to deal with the tanks then build heavy guns behing them (at the back preferably) then as you earn points build more layers of them to become undefeatable.