Acid Psions are a high-priority target; their buff makes all Vek deal +1 damage. Eliminate them quickly. Diggers can destroy tiles, creating chasms or removing cover; try to push them into water or kill them before they dig. Corrosive goo deals 1 damage to any unit ending its turn on it; use it to damage Vek, but avoid it with your mechs. Explosive barrels can be detonated by attacks, dealing 2 damage in an area; strategically use them against groups of Vek.
