have any of you played sorcery quest? the game has a nice ''automana'' that you can adjust the way you want, you should add one for the auto option, like put out structure card first, put out card with least cooldown first and put out raider last
if the game is hard put on EVERY helping mod and casual mode, thencollect some medals, these will make it easier for you when you are playing without mods
for twilight fields: start of with stack plants, they will insta kill the tanks. get the stack plant completly upgraded and buy a mummie or a box bot factory.