Texture dynamic editing (bullet collision on the wall, character steps on the snow) - can be done?

Hi guys,

Do you know if it is possible to do with Armory (do you have some examples probably)?

Yes, you can do texture editing, the best and the only example is Armorpaint

Another way you can do easily is decals. See decal.blend and decal.png in example.

What you can do in your case is spawn decal mesh where bullet hit or where character step.