Does Vaishnavism condemn critics and opponents to hell?
As different schools of thought all claim to be Vaishnava, but as Vaishnavism in any flavor does not derive from prophets as do some other religions, it has never had a history of Crusades, fatwas, Inquisitions, et cetera. That said, however, many Vaishnava scriptures do seem to indicate that purely mundane forms of existence, and the worship of other deities or non-deities as the Supreme, lead to ignorance and misery.