if you encounter a certain protection on a site and you want to bypass using the tamper command, you can use this to bypass almost all sites:
tamper = apostrophemask, apostrophenullencode, base64encode, between, chardoubleencode, charencode, charunicodeencode, equaltolike, greatest, ifnull2ifisnull, multiplespaces, nonrecursivereplacement, percentage, randomcase, securesphere, space2plus, space2plus, unavoidable, incomparable, seasonal, random2
the full list of functions if you want to experiment:
https://ghostbin.com/paste/7mzvr
ps: I know it's not hidden and don't ask me to explain this to you