Onslaught have confirmed their appearance at the Lagoa Burning Live festival on their MySpace:

"We are very proud to announce that we have just been confirmed to appear at the Lagoa Burning Live Festival At Estombar, Algarve in Portugal, on 27th July 2008 alongside our good friends Obituary..

Also appearing at the festival will be:
Tankard
Grave Digger
Cruachan
Dark Moon
Dionysus
+ More TBA

Onslaught guitarist Nige Rockett comments: ''We cant fuckin wait to return to
Portugal especially to such a great festival as this one..It really is gonna be awesome with the Obituary guys there too..
Our last visit was amazing and we met so many cool people, this one promises to be every bit as special...''

Source:	blog.myspace.com
Band profile:	Onslaught
Event:	Lagoa Burning Live Festival [CANCELLED]