This article is about boss enemies who appear in the 2016 hack SM64: Last Impact. Enemies in this article have been organised by order of which course they are encountered in.
Stonesnake Shatters: Ancient Attacker[]
This Ancient Attacker is a giant stone snake that appears as a peaceful, helpful entity inside the temple during Act 3, then later as a hostile enemy in Act 6.
When Mario enters the stage, head up the stairs to the shrine and talk to the pink Bob-Omb. He will tell Mario that they're getting punished and apologizes for dragging him into this. Shortly after, the Ancient Attacker will come out and start spitting fireballs randomly around the grounds.
Grab the F.L.U.D.D. power-up and jump onto the Attacker from a good vantage point, such as . Ground pound the segments of the Attacker's body to harm him. When on it, it will spin to shake Mario off. Do this three times to defeat the Ancient Attacker, dropping the Star in the Shrine.
Crystal Caves: Megalodon[]
The Megalodon is a giant aggressive fish that can be found in an underwater cage near the mermaids in Crystal Cave. In Act 6 only, the fish can be found swimming around the mermaids' lake after breaking out of its cage.
This Act is much easier to complete if Mario has the frog power-up.
In the lake, the fish circles around the central rock and will lunge at Mario if it sees him. It is best to stay on the central rock until the Meg is facing the cage, then jump into the water and swim towards the cage.
Sometimes, it will follow Mario and go straight into the cage. Other times, it will ignore Mario, and occasionally, it will lunge into the wall next to the cage, glitch, then go into the cage (whatever works, right?). The cage will automatically close once it is inside.
Once the Megalodon is in the cell, Mario is teleported to a safe distance, where the mermaids thank hhim and grant him a Star.
Dusky Doomed Dale (Act 1): Dark Big Boo[]
The Dark Big Boo is a tricky variation of the Big Boo, who is only visible in mirrors. Its defeat is required of Mario in Act 1 for Dusky Doomed Dale, and it can be found in the deepest reaches of the mine.
Deep in the mine is a giant mirror. Stare into it and don’t move, and a purple Big Boo will appear. After a few seconds, the Boo will disappear and summon five smaller purple Boos. The gimmick with this fight is that the Boos are only visible in the mirror, so it’s a good idea to stay closer to the mirror so that it’s easier to judge distances. There are two coin rings on either end of the mirror for Mario to heal.
After defeating the first Boos, two more Boos will appear which flip between yellow and purple – when yellow they will shock Mario when touched. So they can only be defeated once they've turned purple.
After the yellow Boos, three flashing red Boos appear, which blow up when touched. Note that these Boos will blow themselves up after a few seconds anyway, so to "defeat" them, Mario just has to avoid them for a while.
After defeating all of the smaller Boos, the Dark Big Boo will finally appear. It attacks by chasing Mario for a bit and then teleporting. The safest way to defeat Big Boo is with slide kicks and/or dives, since the attack doesn’t really need to be timed, like a punch or ground pound. The Dark Big Boo takes three hits to defeat.
Dusky Doomed Dale (Act 6): Kamek[]
Kamek is the witch that the residents of Dusky Doomed Dale frequently talk about. After Mario releases Kamek in Act 4, he is tasked with apprehending Kamek in Act 6.
Kamek's moveset consists of flying around the central part of the village, and throwing blasts of magic at Mario. When these blasts of magic make contact with a surface, they summon a Goomba.
In order to defeat him, Mario needs to hit him only once, but due to Kamek's small hitbox, this can be quite challenging, plus, his size can make it tricky to tell how close he actually is to Mario. The trick to defeating Kamek is to allow him to swoop closer to Mario, then wait until he throws magic. Every time Kamek throws magic, he pauses in the air to do so, which leaves him vulnerable to attack.
Melty Molten Mountains: Gargantua Blargg and Nep-Enut[]
Harried Honey Hive: Giant Spider[]
The giant spider is an exceptionally large arachnid who presents as the boss of Last Impact's ninth main course, Harried Honey Hive.
Grab the Bee Mushroom power-up and combine with a side-flip, so Mario can reach the top of the tall pillar to his left in the central room. Then, walk forward and take the left path to reach one of those giant spiders the bees warned you about.
To defeat the Giant Spider, Mario needs to groundpound its head three time, but unlike the other spiders, you will have to wait for it to finish its attack before attempting your own, otherwise he will hurt Mario. After every successful groundpound, he will throw Mario off and become more agitated. There are some coins located around the "arena" for this bossfight; they'll be needed if Mario gets hit as the giant spider can inflict a fair bit of damage.
Sky-High Islands: Kurma Koopa[]
Kurma Koopa is a giant, turtle-like being who can be seen flying in circles in the land he rules over. Defeating Kurma is needed in Act 2, and requires Mario to somehow climb onto him.
From Mario's starting point, cross the bridge to his right and land on the island below. There you will see Kurma Koopa slowly floating in circles. When he gets close enough to the edge of the island, longjump onto his nose and ground pound on his stitch. Be ready because after you do, he will catapult you to the very back.
Make your way back up towards his head, and be careful not to jump when the wind is blowing. There will be three Paragoombas close to his neck this time. Ground pound on his nose again and make your way back up towards his head for the 3rd and final time, while being careful of the increased number of Paragoombas. After the last ground pound, Mario will be safely teleported to the main island where he will find the Star waiting.
Colossal Circuits: The Viruses[]
The Viruses are three individual enemies who appear in Act 6 of Colossal Circuits only. They are comprised of Chill Virus, also referred to as Bluey, Fever Virus, and Weird Virus.
Initially, the Viruses take turns attacking Mario, with each of their turns ending after being struck once by Mario. After they have all had one turn each against Mario, they all attack simultaneously. Their attacks remain the same as before, but with the added challenge of squaring off against all of them at once.
Chill is the first of the three viruses to attack the player. Chill attacks by summoning an icy gale that continuously pushes Mario away from itself. There are a number of ways to deal with Chill- sidestepping the icy gale and running straight towards it can work. You can also try this: stand relatively still and wait for it to begin moving around, then run towards it while it faces away from Mario and stomp on it.
Fever is the second of the three Viruses to attack the player, and will deal 3HP of burning damage to Mario with each hit. Fever attacks by hurling fireballs at Mario in a similar fashion to the effects of a fire flower, which can be dodged with some sideways movement.
Weird is the last of the three Viruses to attack the player, and will take 2HP off of Mario with each hit. Weird attacks by swelling enormously in size and running into the player to deal damage. There is a rhythm to how Weird grows and shrinks in size; wait for Weird to shrink a bit then quickly stomp it like the others.
The Viruses are based on the antagonists from the spin-off series, Dr. Mario, in which they play a more literal role as viral pathogens.
The inclusion of the Viruses in SM64: Last Impact is a play on words, as a "virus" is also a term used for digital malware. The music playing in the background of this bossfight is Fever- the main song used in Dr. Mario games- but in the SM64 soundfont.
Underground Depths: Devil Big Bully[]
The Devil Big Bully is a variant of Big Bully featuring a devilish tail and a red colour scheme. From its centre, it generates a red spherical shield, which rhythmically grows and shrinks in size.
The intended way to get to the Bully is to jump across the broken bridges, onto the platform and then run all the way around down the path, past the box with the Fire Flower, and then down the path to the arena suspended over the lava. However it is much faster to simply jump down from the second broken bridge directly to the arena itself.
Th requirement for defeating the Devil Big Bully remains the same as with any of the Big Bullies from vanilla SM64. However, now Mario can only hit it when the shield is retracted enough, as the shield will burn Mario upon making contact.
The key to the Bully fight is to wait slightly between jump kicks so that the fire shield has time to retract. The other common Bully strategy is to lure them to the edge of the platform and jump over them, but this Bully will stop chasing Mario before he gets close enough to the edge. Knock the Bully into the lava to get the Star.