Various Unlockables
To unlock Clusters, Modes,
etc.. complete the following tasks:
Unlockable: --- How to Unlock:
Omicron Cluster --- Complete
all 4 cells from the Zeta cluster.
Sigma Cluster --- Complete all
4 cells from the Omicron cluster.
Unlock Survivor Mode ---
Complete all 4 cells from the Sigma cluster.
Zeta Cluster --- Complete all
4 cells from the Epsilon cluster.
