Dash
From Eldfall Chronicles
When performing a Run Special Movement, this model may declare an unmodified STK 1 Melee Attack in its Action Step.
Community Answers (Discord)
Q: How does Dash enable Hit and Retreat?
A: Dash lets a model declare a special, limited (unmodified, 1 STK) melee Attack Action on top of declaring the Special Movement Run — which is normally not allowed. That declared Attack is what Hit and Retreat needs to function. (— meksmaks / Dockel)
Source: Eldfall Chronicles Rulebook v1.6, p. 67.