As many of you may have realized by now, Chrome on Windows no longer allows you to install any extensions from outside of the Chrome Web Store. SuperdAmn, like virtually all userscripts, are absent from the store and in order to put up your own extensions in the Web Store you need to pay. However, there's another way to get SuperdAmn working, and for that matter, any other userscript in Chrome on Windows.
Tampermonkey is an extension that manages your userscripts for you. It also makes many userscripts that normally only work with Firefox (through Greasemonkey) work in Chrome. Using Tampermonkey, you can bypass the limitations on installing userscripts outside the Chrome Web Store. Once you have Tampermonkey, all you have to do to install SuperdAmn is click a link to it and click the "Install" button on the page that comes up. You no longer have to go through the instructions in the old Chrome installation guide.
The links for both Tampermonkey and SuperdAmn for Chrome are below: