I think the crawler is a good idea, albeit in my opinion strictly a hack around the idea of basic body parts for monsters in addition to NPCs (more Fallout series vats, or X-com style âbasic limbsâ than DFâs âmodeled down to the layers of skin, hair, bone density, and fingernails.â)
But that may be because I want to see bits reanimating and trying out solo careers on occasion as the blob tries to bootstrap its way into making the best of itâs situation, pasting itself back together or filling in the blanks wholesale with mutations. Since even the player is technically infected it would be hilarious to be attacked by your own severed arm on occasion (terrifying again when it stalks you, inevitably growing into a mutation-riddled doppelganger. Yet it still doesnât feel⌠whole.)
Hazmat zombies I could see being a type along the lines of the Police, Military, Child, or Shocker zombies (being based on some equipment or profession before they died, rather than subsequent changes.) Medical+Fema Reponse teams, CBRN Squads, Survivalists, Research Teams, and Govt ViPs might all be people who could be âturnedâ while in a suit.
Not much suggestion as to how Hazmat zombies would fight differently though except that they probably have really cruddy hearing/scent, but resilience vs cutting or chemical weapons (gas grenades.)