Mad Men Season 6 Premiere aired on Sunday on AMC revealing several shocking surprises to the community watching the much anticipated show starring Jon Hamm as Don Draper.

The first episode of Season 6, "The Doorway" was greeted with mixed reviews from TV critics.

Read the reviews from Mad Men Season 6 below:

"Mad Men" creator Matthew Weiner, who wrote this episode, misses few chances to remind Don that the ground has shifted under his feet in the eight or so years since the show launched," wrote David Hinkley for the New York Daily News.

"Weiner's ability to bring Don's past back into Mad Men is impressively woven into the start of Season 6," wrote Tim Goodman for The Hollywood Reporter.

"There's no predicting where all of this is headed, but if one last reference to The Divine Comedy [Don reads the poem throughout the episiode] is any sign, this season's journey toward the final act of Mad Men's American epic promises to be its most challenging and rewarding," wrote Luis Sanchez for Slant Magazine.

"To borrow from Dante, ''The Doorway'' is Mad Men in purgatory. It's time for its boozy-woozy cluster of souls to ascend, descend, or just plain move. We pray for redemption, but more than anything, we expect to see what we've always gotten from the show: the best drama on television," wrote Entertainment Weekly TV critic Jeff Jensen.

"As we pull back and look upon it all, it seems that Mad Men is leading the audience down a path of death and despair. But after watching the spectacular season 6 premiere, 'The Doorway, Part I & II,' it seems that the series which left its audience with the (thankfully) unfulfilled expectation that Pete Campbell was a suicide waiting to happen, isn't just pointing toward the end; it's pointing toward the way out," wrote Kevin Yeoman for Screenrant.com.