Chronos is a 1993 Mexican horror film written and directed by Guillermo del Toro and starring Ron Perlman and Federico Luppi. A strange device gives a taste for blood and longer more vigorous life. It's a fascinating vampire variant.
Time Out concludes, "A most startling genre piece: tender, imaginative and wholly its own." Empire Online calls it "a wonderfully baroque, gleeful subversion of the days of Hammer. A unique, terrifying mini-masterpiece." Moria praises it, opening with this: "This fascinating Mexican-made film attained some of the most celebrated reviews of any arthouse genre release when it came out. It gained first-time director Guillermo Del Toro a strong reputation". 1,000 Misspent Hours gives it a positive review, saying, "Cronos seems as eccentrically fresh today as it did back then. Furthermore, in stark contrast to some other drastically revisionist takes on the subject that I could name, Cronos achieves its uniqueness without redefining vampirism to the point where it ceases to be itself anymore."
Horror News has several screenshots and recommends it for you if you "want a movie with intensity and humanity, a story which really explores the myths and adds something new to the mix, then give Cronos your time, you won’t regret it."
Roger Ebert gives it a positive review and says, "The heart of the story is the love that persists between the little granddaughter and the immortal old man, after everything begins to go horribly wrong." Rotten Tomatoes has a critics score of 89%.