Anything that increases your attack strength will make it easier. That means upgrading, casting spells, getting equipment, heck, even buying a pro pack for attack will help.
I wouldn't define hansel as a build that contains 25% attack orientated buildings. That's just confusing and a little misleading. It's more like more than 75% spy buildings.
That didn't answer the first part of my question, but it is one per device the alt being you computer alt that you can also access through your devices browser...idk if you can access through a browser though