u/Snoo61478

Mc gets summoned with a few people. (some bad girls...)

They don't like him/acknowledge him.

He starts to train to get better and to present them with strategies to improve monster/demon hunting as a team

They still treat him like trash and so after a while he goes alone

he's got a weird weapon like in Bloodborne (a spinning wheel chainsaw thing???) and full plate armor

Later he meets FMC(archer?) who likes him and call's him by the title he earned among the people(lone hero? or something?....)

already read

-The Gunner's Life of a Middle-aged Man Summoned to Another World and Armed With a Rifle

-Gate - Jietai Kare No Chi Nite, Kaku Tatakeri

-Arifureta: From Commonplace to World's Strongest

-Japan Summons

-Magan to Dangan wo Tsukatte Isekai wo Buchinuku!

-Hokkaidou no Gen’eki Hunter

-Manuke FPS Player ga Isekai e Ochita Baai

-Release That Witch

-The World of Otome Games Is Tough for Mobs

-High School Prodigies Have It Easy Even in Another World!

-Creature Girls: A Field Journal in Another World (booba!)

I'm more interested in tanks/airplanes/ships and vehicles and various guns/bombs

not much on giant robots mecha gundam stuff and SF levels of science

When MC was a kid he won a talent TV show for spelling without stuttering any words.

After that his parents encouraged him to pursue his passion but then at the age of 30-40 years old he's just a corporate drone sad and regrets his life (considers his no stuttering a useless talent).

Then he gets isekai'ed, finds a cursed book which holds immense power and spells.

But the chanting is SUPER long and if u mess a single word/letter u DIE.

Now this previous useless talent is OP so he goes on an adventure.