Survival is a Game Mode in which player(s) work to try and kill as many enemies as possible to collect energy for a higher score. Enemies come in increasingly harder waves so it's important to take the energy you collect back to the starting point and convert it into points/money. The money is used to purchase new weapons, upgrades and additional ammo. The points will also determine your final score.
Alpha V100 - Introduced.
Alpha V101 - Unlimited weapons, better for multiplayer