It does not need any installation, just run the .exe file, select scan options and start to find and repair infected files.
You can select custom areas to scan, set options like unpack archives, scan memory, detect fake anti viruses (viruses that act like an anti virus), quarantine items found with problems before cleaning and more.
You can choose what files to be reported on results log, based on suspicious level (low, medium, high, maximum).
You can select specific files/folders to be excluded from scanning.
Pros:Does not need installation and is oriented to clean/repair infected computers (instead just reporting and blocking).
Is good to use it as a solution to repair infected computers, you can remove viruses and have a clean computer, without installing again operating system and your favorite programs.