Mission 01:
Career Mode.

Objective:
Your task here is to hold on various waves of aliens as long as possible until at some point you will clean up the area and then after you can move to your next mission. The enemy species will evolve while you progress and also their number so watch your surroundings!

Advice:
At some point of killing enemies, you will gain experience and you can advance in skill and weaponry which it will give you a huge advantage completing your mission... choose wisely what you pick! Also the enemies will drop various power ups and of course ammo boxes which as well will help you complet the mission easily. #sigmateam #alienshooter2