Tips

Always Kill Aliens ( Always send x10 its power ) or you will result in losing some troops. 

Gather RSS (Resorces) Never gather level 1-3, they give nothing

Kill Alien Bugs They give good EXP when chain atacked on, they also drop a Cach when it dies, Also gives Armory Supplies. Armory supplies give items for your hero, which can be used to build gear in the hero armory

Mantain your hive before Expanding, So it will be easier to keep the hive clean

Participate in challenges they give alot of rewards

Research Effeicncy stuff like making research faster, More troop capacity, this can make you grow faster, which gives more power