The rollback command only removes the latest changeset, if you want to
remove/undo multiple changesets (and all of their descendants) from a repository
you can use the "strip" method that comes with the "Mq" extension:
The Mq extension is distributed with Mercurial so to enable it just edit ~/.hgrc (in windows: C:\Users\UserName.hgrc) and add the following lines:
[extensions]
mq=
If you use TortoiseHg, then you can just open the settings page, and in the Extensions section enable "mq".
Find the revision number of the changeset you wish to remove (via TortoiseHg or
hg log) and execute the following command:
> hg strip <revision-number>
If you mess up you can restore the changeset by running:
> hg unbundle .hg/strip-backup/filename