Make a new script (the + icon in your userscript manager) and copy the code word for word, then save.
You need to select a level first! It will not work by simply clicking Review or Learn. Select a level first.
| Got Chrome? | Install Tampermonkey |
| Got Firefox? | Install Greasemonkey |
| Got Opera? | Install Violentmonkey |
| Got Edge? | Install Tampermonkey Edge |
| Got Safari? | Get a new browser, fuckface. |