Hi Holotable Heroes,
There is some confusion around why some feats that require defeating enemies are not counting in some circumstances. These feats are working properly but the explanation requires a deeper understanding of how damage is applied from effects like Damage Over Time, Thermal Detonators, Expose, and Plague.
When a unit is damaged from effects like Damage Over Time, Thermal Detonators, Expose, and Plague, the unit afflicted by the debuff considers itself as the unit dealing the damage (and dealing the killing blow if this damage defeats the unit). What this means in practice is that if you attack a unit that has Expose and the Expose damage is what actually defeats the enemy, then your squad will not get credit for the defeat and it will not count towards your Feat progress.
We understand this interaction is not intuitive and will monitor its impact on the current Conquest.