Continuity mistake: When Indy is held captive in the Soviet's tent, Mac enters and they have a conversation. Indy then turns his head to his left, looking straight at Mac. Just before Indy makes his threat about what he'll do to Mac when he gets loose, there is an angle change, and Indy is suddenly staring straight ahead, with no time to turn his head in between shots. He then turns his head back to look Mac in the face again.
Continuity mistake: In the beginning when Indy's hat is thrown from the trunk onto the ground, it faces the 9 o'clock postion. But when Indy reaches to pick it up half-a-second later, it faces the 12 o'clock direction.
Continuity mistake: Indy's mostly buried in the quick sands and he is handed a snake. Half a second later, when he has just managed to grab it he isn't buried as deeply.
Continuity mistake: Indy's head position and hairstyle keeps changing in the shots after the test jet comes to a stop.
Continuity mistake: Throughout the whole movie, Irina's hair seems to be kept absolutely pristine, even when she is flung from cars. This is very noticible at the car chase in the military base when she is thrown from the car by Indy. One minute, a few strands of hair are slightly messed, then they are fixed again. It is likely, however, given the many other nods to films of that period, that the "concrete hair" effect is a deliberate decision.
Continuity mistake: In the diner scene between "Indy" and "Mutt," Indy's shirt-collar points are smooth under his jacket lapel in some close-up shots, but in others one collar point is curled up.
Continuity mistake: When Mutt first shows up, he is riding his bike between two train wagons, or between a train and a railing next to the station. This changes back and forth with no logic at all.
Continuity mistake: Mutt points out at Orellana's mummy, whose shroud is tightened and neatly set. Indy walks towards it and the shot cuts to a closer angle where the shroud is now crappily set. Obviously there were previous shots of Indy opening it, and the shroud was later messily closed to repeat the shots.
Continuity mistake: In Akator, Indy, surrounded by Marion and Mac, tells Mutt to find a stone. When Mutt comes back, in less than a second, Marion and Mac are nowhere to be seen.
Continuity mistake: When Ox finds out about the stone that pours out sand, Mutt is up the stairs. Then the angle changes and he is down, starting to walk upwards.
Continuity mistake: In the wedding scene the bride has open toed shoes when she kisses Indy and begins to exit the pulpit area, but different closed toe shoes as she and Indy depart the church.
Continuity mistake: By the waterfall Indy says "Nobody else can" and then Mutt's wet hair swaps from brushed backwards to messy.
Continuity mistake: When Jones is strapped to the chair in the tent Irina uncovers an alien to shows him. She then covers the alien with the cloth, but when the camera moves to a wide shot the soldier at the other side of the table does the same thing.
Continuity mistake: At the diner, Mutt places the photo on his hat, yet it swaps from standing out to tucked inside, between shots.
Continuity mistake: When the aliens kill the Russians, the group is launched out of the temple thanks to a jet of water. Seconds later they're all completely dry.
Continuity mistake: When Col. Spalko begins cutting the leather covering the alien corpse in the casket, no straps are seen. In the close-up shot a strap is suddenly visible.
Continuity mistake: During the jungle chase, while Spalko fires at Indy's jeep, her hair remains perfectly still in the angle shot from behind, but moves wildly in the front shots. This swaps back and forth.
Continuity mistake: During the ants scene, Indy is about to grab a stick to the left of his hat. In the close-up the stick and the hat have swapped sides.
Continuity mistake: In the Nevada warehouse, while Spalko opens the bag a strap next to it appears or disappears depending on the angle.
Continuity mistake: When Indy is about to grab the branch to hit the soldier, his hat keeps moving around between shots.
Answer: He's screaming "Help me!"