Continuity mistake: After Coco Marchand's emergency surgery for a serious gunshot wound to the chest, she is seen recovering in bed, in a coma, on a respirator, possibly permanently brain-damaged, and in critical condition. A few hours later, when Eldridge Palmer is sitting by her bedside, Coco is suddenly without the respirator and there is no physical sign (bandages, tubes, stitches, bloodstains, etc.) whatsoever of her just having had extensive thoracic surgery for a near-fatal injury. There is only an IV line in her arm. This is before The Master arrives and revives her, and Palmer did not know if/when The Master would come, so he would not have had the respirator removed.
Continuity mistake: Fet is in the sewer looking for rats and encounters a group of infected. He is holding a handkerchief to his face with his left hand to mask the smell. He has his flashlight in his right hand, and pulls out an iron bar with his left. As the camera angle changes, his left hand is again covering his mouth with the handkerchief (no iron bar), then the angle changes again, and he's holding the iron bar again. (00:35:05)