I'm GMing a post apocalyptic setting where medieval-level tech is normal, but anything more advanced is powered by the user's blood. This is called Hemoscience and it's basically technobabble with blood (kind of BetaX).

With this tech humans burned the planet and now they live in an artifact-town, going outside to get blood and resources.

I have basic weapons and equipment, and some enemies. There are bookeepers that store knowledge, psychics and the regular explorers so I'm looking for suggestions on enemies, missions and other equipment outside the just weapons i can use to give my players

I have a really cool Griffin ambush planned. How ever, my players are all knights in heavy armor with warhorses and typically obliterate the griffin in my test runs.

What can I do besides give them more wounds?

My campaign group was having a debate on whether sling weapons would count as throwing or shooting. Is there any official ruling?