Chill

Chill is an effect that can be used to bypass enemy blocking units. Certain units can add chill to enemy blocking units by using their ability. A unit with chill equal to or greater than its health is referred to as frozen and does not block.

All chill is removed from all units at the start of each turn.

Chill Strategy
There are several main situations in which chill is powerful. Freezing small defenders can lower the other player's defensive granularity. For example, with 3 Tarsiers and 2 Cryo Rays, players can use the Cryo Rays to freeze any Engineers the other player might control, forcing them to throw all on one of their Walls, thereby killing it. Without the Cryo Rays, they could instead could block with an Engineer and absorb  with a Wall. Units that can chill for small amounts repeatedly, such as Cryo Ray or Shiver Yeti, are particularly effective at this technique.

On the other hand, freezing your opponent's large defenders can minimize the amount of absorb obtainable by the opponent. With 3 Cryo Rays and 2 Tarsiers against an opponent's Wall and two Engineers, freezing the Wall with the Cryo Rays kills the two Engineers, denying the 2 absorb that the Wall would have provided.

Chill is also a very effective means of ensuring a breach. Although many units with chilling abilities deal little or no damage, the amount of health they are able to nullify on defense tends to be very high for their cost. Units like Frostbite (and the related Frost Brooder and Endotherm Kit) deliver a large amount of chill for a very low cost. It is very difficult to prevent a breach if the other player amasses enough of these units. These units are therefore very powerful against breach vulnerable units, such as Vivid Drone or Lucina Spinos.

In addition, Chill is effective vs. Blockers with Lifespan. If a currently active Blocker has 1 Lifespan, Freezing it effectively kills it. For example, if a Plexo Cell with Lifespan 1 is chilled by 2 Shiver Yetis, it will not be able to block and then die due to running out of Lifespan.

Remember that the breach indicator only adds up your opponent's damage and chill values and compares them to your defense value to determine whether a breach will occur. It may not accurately reflect your opponent's potential pressure. For instance, if your opponent has 2 Cryo Rays and 2 Tarsiers (4 pressure total) against your Wall (3 defense), the game will warn you that you are about to be breached, even though a breach is impossible in this scenario.