There are three tiers of structures in the Chimera faction.
Spear Protocol - Buildings & units of the SPEAR quick reaction force.
Shield Protocol - Access to defense-oriented equipment.
Sword Protocol - Access to assault-oriented equipment.
- You already have access to the Spear Protocol tab. To get access to Shield Protocol buildings you have to build a Barracks which is in the Spear Protocol tab.
- Once the Barracks is up you can learn Shield Protocol.
- Oncethe Shield Protocol is learnt you can learn the final tier, Sword Protocol.