Hurt and die animations are now in Infected Horde as a free update (v1.2): nine infected, east and west, 4-frame hurt and 8-frame die on the same canvas and pivot as walk, attack and idle. Just re-download the pack. The big-headed ones are left out as you asked; let me know if you need north and south as well. Details: https://gegx.itch.io/infected-horde/devlog/1698096/v12-hurt-and-die-animations-free-update