Those of us not familiar with Full Invasion...what do they do?
Team 1 has to survive waves of zerging bots, in FI there are different enemy factions, Zombies, Peasant Rebels etc.
Every 3 round a Boss will come. Those who died inbetween these 3 turns, can respawn when the Boss is killed.
If a team gets to the final Boss and kills it, you won.
People can build barricades, get unique weapons there, and more.