Pretty simple and straight forward. Equip your team with laser weapons as soon as they're available and reduce the shields of some enemies to vapor.
Shielded enemies glow blue and have a blue shieldbar over their health. Normally only high level aliens are shielded except when an Outsider Shield Commander is in the field. They can give shields to any ally.
The weapons to use here are:
- Laser Pistol
- Laser SMG
- Laser Pulse Rifle