A crew walks inside a dead monster through a hole they cut and we see a lot of slime and glowing geometric structures.
A small monster bursts through a cut and crawls after the shouting scientists.
A man sticks a knife into a monster which swallows the man.
A fishing trawler in the winter Alaskan waters is confronted by a giant monster until a Jaeger (a giant army robot fighter) shoots the monster with cannons to stop and apparently kill it amid flames and glowing monster-slime, but the same monster reappears and smashes the army robot; the co-pilot is ripped away and out a hole smashed by the monster and we hear that the co-pilot dies while the pilot, his brother, is still mentally connected to him; the survivor crawls out of the robot wreckage with a bloody nose and face, deep cuts on his shoulder and bloody slashes on his side (he grunts a garbled "Damn it!," collapses to his knees on a beach, falls to his back, and a man and a boy see him and run to get help).
A Kaiju tosses a robot toward the audience, over a bridge and into a commercial container yard; the creature follows and fighting continues as the robot picks up containers and bashes the shrieking Kaiju with them; the monster finally dies in a glowing heap from getting shot repeatedly by the robot, which is using plasma cannons; the Jaeger later picks up an ocean liner and walks through the city, slamming another monster with the ship until the beast's tail rips the ship from the robot's hands, tossing it away into the streets. The ship smashes the glass walls of two high-rises with a loud crash before coming to a stop while lodged between them.
Two men become involved in an extended fist fight and throw each other against items and to the floor. At one point, one of the men twists the other's shoulder and we can hear some bones popping. One of the men is left with some mild red scrapes on his face.
Some of the army personnel speak to each other in emotionally aggressive and derogatory manners.
Giant robots fight with monsters by punching, wounding the creatures with spinning blades, missiles, cannons, and large swords in several scenes.
Creatures are stabbed after a leg or a head is cut off and several die in a pile of glowing blue slime.
In a few robot-monster fights, monsters fall dead, get back up, fight again and fall dead a second time.
Three Jaegers fight one Kaiju and two of the Jaegers are broken apart (we hear that their pilots all died); the remaining Jaeger is disabled from an electromagnetic blast before it can finish off one of the Kaiju; the fourth Jaeger dispatched rips the electromagnetic bulb from one of the creatures as we see sparks, electric bolts and slime fly; the Jaeger extends a large sword and slices another monster in two diagonally as the monster attempts to suffocate the pilots at a very high altitude (we see a splatter of blue blood and sparks as the creature shrieks).
Two Jaegers go under water and we see lava fill the screen at a rift in the pacific floor as Kaiju monsters appear and the two robots fight them; one robot, whose pilots agreed to a suicide mission, is disabled and the pilots blow it up with a loud explosion that cause rolling waters that clear out all the monsters from the rift.
In a few scenes, we see giant monsters smashing skyscrapers with a lot of loud breaking glass and hundreds of cars being thrown through the air accompanied by loud stomping and crowds of men and women running and shouting; one large crowd enters an underground bunker that becomes dim and silent.
Ironworkers weld girders, high in the air, completing a wall around a city while news reports indicate that at another city, a solitary Kaiju broke the protective wall surrounding the coastline; we see the Kaiju break through the wall as crowds of people run and scream. In another scene we hear of three ironworkers falling to their deaths on the wall.
A pilot picks a fight with another pilot and they fistfight in a hallway until their commander stops them (bruising and cuts are shown, and one of the men spits out blood).
A tryout for robot pilots includes martial arts duels with Asian bo staffs; pairs of men and one male-female pair fight with bo staffs; everyone falls at least once, but no one is hurt and in the final match, the winner is paired with a pilot. These are definitely sparring matches, with no ill will.
A female robot pilot has a flashback while operating a robot and we see her as a little girl (about 6): a Kaiju stomps through her city, chasing her in smoke and dust, and we hear that her whole family was killed; a Jaeger sent after the Kaiju fights with it offscreen as loud crashes and alien shrieks are heard, then silence; she collapses inside the robot head after she is disconnected from the robot weapons that she tried to aim at the flashback (she stares into the distance).
In an underground bunker, people hear stomping feet overhead and a monster claw breaks through the ceiling; a Kaiju reaches for a man, misses, and then sends in a long glowing blue tongue (looks like a flower, pistils and stamens); the man and the crowd in the bunker escape.
Pairs of robot army pilots are wired together neurologically and bound in tight harnesses within robot heads with each pilot operating one leg and one arm of a giant robot (Jaegers); their feet are snapped into large metal vices in order to move the heavy robot feet as the pilots walk and the physical and psychological pressure is intense (we see a lot of sweating and fidgeting from the pilots, their faceplates fog up and their breathing is labored and at times they lose control of one of their own limbs).
Army pilots train to operate giant robot fighters being fitted with heavy electronic coils and blades on their arms and flashback sequences show the men exhausted after training; two pilots each operate the Jaegers in combat, suffering recurring nosebleeds from the intense effort.
A scientist dissects slimy alien body parts and tosses small multi-tubed blobs onto a table; we see glass tanks of yellowish liquid behind the scientist and the contents are indistinct, blobby bluish alien parts; one tank contains a large blob with tentacles and what looks like an elephant nose; we hear it is a secondary brain like that supposedly of dinosaurs.
A black market dealer shows a scientist different bins of large parasitic bugs with many moving feet, and carts of slimy blobs (Kaiju and other organs); the dealer twirls a Balisong knife and sticks the blade up the visitor's nose, causing some bloodshed and a shout; as loud stomping is heard outside, six of the black market dealer's minions point handguns at the scientist's head and one man throws him into the street.
Robot pilots and scientists in pairs wear headgear that establishes a neural bridge through which all their life experiences are shared; we see blurred flashbacks of children playing, families interacting and the destruction of cities by giant reptiles as they stomp through the streets; two scientists mind-meld with a Kaiju brain and we see gray and blue flashbacks that include geometric shapes and snapping teeth as well as childhood and university scenes.
Scientists experimenting with new headgear for mind melding suffer several slight nosebleeds during melds with each other and alien brains and they suffer convulsions on their first meld.
We hear that a pilot was exposed to lethal doses of radiation and we see blood drops fall to his shoes in close-up; the camera pans to the handkerchief he holds to his nose (no blood is shown).
A senior robot pilot wears his arm in a sling from injuries we saw he suffered in battle (no blood is seen); in an earlier scene, we see him getting thrown sideways into a wall when the Conn-Pod (the Jaegers' cockpit) is slapped by a circling Kaiju outside (moments earlier he disconnected from the safety harness in order to manually diagnose the robot).
We hear that modern Kaiju monsters are sent to clear the planet of vermin (humans) so that a master race of aliens can claim the planet's energy sources.
A Jaeger carries a thermonuclear bomb into a rift in the ocean floor, along with the carcass of a Kaiju; the Jaeger has lost its right arm and its right leg is severely crippled, but it keeps going and stands towering over a cliff at the bottom of the rift and until several of the alien master race look up from the cliff (the aliens are about 8 feet tall, bipedal, with four arms and each with a face like the proverbial insect-like alien "grays."
Escape pods carry pilots to the surface of the Pacific Ocean before a bomb explodes in a rift on the ocean floor and we hear that the rift is sealed.