If you like Old School Death Metal in general, yes. Their best material is on the first two EPs, Ressurection Absurd and The Eternal Fall.
If you're referring to the Japanese Sabbat, fuck yes! Classic first wave styled Black Metal played with conviction and balls. Envenom, Evoke and Disembody all come highly recommended. I'm much less familiar with the UK Sabbat.
Yes. Awesome crushing Death/Doom.
An Anatomy of the Beast, yes. Highly competent melodic Death Metal (not even closely related to Gothenburg) with fantastic leads.