I collected all these myself when I decided to rewatch Wakfu this year for the Season 4 release, might as well throw it up here as I don't see any other torrents this complete.
Season 1+2+OVAs: Bluray rips with the fixed framerates (from this torrent https://nyaa.iss.one/view/1780198), with the fansubs added as an extra subtitle track.
Season 3+4: Bernd Lauret WEB-DL Season 3 never had a Bluray release, this is the best available. No Bluray for Season 4 yet.
Specials: Mixed. Mostly from /co/ mega downloads. All are included, including the Noximillien special.
Specials list:
Ogrest the Legend
Noximillien the Watchmaker
Goultard special
Oropo special
Comments - 5
freaky
cosmic
DmonHiro
Shogunnebby (uploader)
DmonHiro