If you want to execute a list of rules you need to configure the list first, in your validation microflow you can iterate through the list. Will work pretty much the same as above example.
Why not create a validation microflow which returns a boolean and has the object to validate as input? Create a boolean and set it to true at the beginning and start checking each validation rule. If validation fails set the boolean to false and use the validation feedback option. At the end return the boolean.