As Mint said this he flapped his wings once and arrived at his destination, a cave dungeon where the miniboss Nephila Regina is located, he looked at the fiends he could summon and chose to summon 2 Mezzoloths [Mezzoloths appeared to humanoid insects, standing 7 feet (2.1 meters) tall. They had six lanky limbs, four of which were arms ending in horned hands that were tipped with talons. Their entire bodies were covered in dense plates of ivory-colored chitin and their broad skulls were notably armored. When angered, their wide-set, unblinking eyes glared red, a state they were nearly always in. Despite their claws, Mezzoloths almost always carried a shield and trident, or two tridents alone, into battle.] as they knew a spell called Cloudkill and it is good for multiple enemies and 1 Barbed devil [Barbed devils were lithe, 7 ft (2.1 m) tall humanoids bodies that, as their name implied, were completely covered in barbs. Their horned hands ended in strangely, lengthy claws and their long, burly tails were coated in spines. Shifting across the room were their gleaming, vigilant eyes, so constant in their movement it made barbed devils seem anxious.], as barbed devils could hurl flame at enemies at a safe distance and they have a good defense after he summoned them he advanced into the cave, while he entered the cave only a couple of spiders crawled to attack him so he increased the spawn rate of the spiders and ordered a Mezzoloth to use Cloudkill on them, now hundreds of spider swarms are crawling to a vicious yellow-green fog that is spelling their doom plus the barbed devil finished off sturdy and lucky ones that managed to not die instantly...
This happened for an hour until Mint got bored and started to advance, now the boss Nephila Regina appeared and rushed Mint but because Mint expected it he commanded the barbed devil to grab the spider, the spider tried to dodge but the barbed devil caught it easily and as he grabbed the spider the barbs on his body dug into it, Nephila Regina was slowly dying because of the Cloudkill but the barbed devil is immune to it so he's just chilling while holding it, this happened quite often as Mint quickened the respawn time of the boss from 3 hours to 20 minutes. After Mint got to level 30 he stopped as it would get boring to be too overpowered...
Mint after reaching level 30 just hung around and checked some stuff like what is the situation outside and about the other clones on the outside hanging out with his "friends" that didn't join Sao this time but will join another VR in the future, now as he's pretty overpowered he created a powerful organization that will have most companies and the like as their puppets by various means, from blackmail to profitable trade, RECT is in the profitable category.
He lazed around for around 7 days until it was an hour before the boss raid was supposed to happen, Mint checked what the boss was and started chuckling, as it was a giant tree and the fiends he got for level 30 were a giant fly that could suck its moisture and a bird that could release toxic spores, so Mint just summoned 2 Chasmes [the flies] and 1 Vrock [the bird]. When the demon summoners asked what should they do Mint told them to summon Barlguras [CR of 4] {Barlguras normally stood 5‒6 ft (1.5‒1.8 m) tall, although some were known to reach just under 8 ft (2.4 m). They were visually similar to orangutans, possessing broad shoulders, long forelimbs, and short legs. While capable of standing upright they normally shambled across the ground on all fours like apes. Where their skin was exposed was grayish-brown, and most of their bodies were covered in matted reddish-brown fur, but they were capable of changing its color reflexively. A pair of tusks jutted out from their jaws and they leered at their enemies with rheumy, red eyes furthering their terrifying and drooping visage. The key feature that distinguished them from orangutans was that their hands and feet each had six digits with noticeably lengthy claws. Despite being capable of fighting without them, some wielded weaponry and wore clothing or armor.}, he told them to use those because they are fighting a tree and it would be ironic.
And so the fight developed like this, the Chasmes sucked the moisture from the tree from the start, the Vrock spread its spores to poison the tree, and the Barlguras grabbed its parts that are used to attack and when the evil tree used its poison attack it didn't affect the demons that much, oh and the original team that wanted to kill the boss knew that this would happen so they just watched as the boss was mangled by the demons.
As Mint got a bit bored with killing weaklings without much progress he decided that he will wait a bit until his next move. [I CANNOT write about things without details, I don't want to go check the wiki about bosses that are in a Sao GAME while I am writing a novel about mostly the anime and novel, so blame the lack of chapters on the damn novels that jumped straight into high levels instead of a bit of storytelling on the lower floors!]