Episode was OK. Tyrese dying sucked. But more than that, its how he died. He was bitten by a stealthy ninja walker who didn't make a sound until it grabbed him; although normally you can hear them moaning from 100 yards away. Then the single walker overpowered a man whod killed walkers by the hoardes with his bare hands; while the same time walkers normally cant even overpower carl or small children. Its just ridiculous.
Even worse, the show is almost certainly about to do nothing for the next several episodes; if their previous patter holds true. Usually, the show premiers strong, then does nothing for several episodes; until the finale.
After season 2, it was painfully obvious the writers were dragging this show out as much as possible; even to the detriment to the show. Apparently this is the only profitable property owned by AMC, which almost certainly has much to do with the unbearable prolonging (apparently AMC distributed but doesn't own Breaking Bad or Mad Men).