I Went To Raid Tomb, But There Were Barrages Everywhere is a Manga/Manhwa/Manhua in (English/Raw) language, manhua series, english chapters have been translated and you can read them here. You are reading I Went To Raid Tomb, But There Were Barrages Everywhere chapters on ManhwaZ, fastest updating comic site. The Summary is
Barrages are the best! There are tomb dungeons everywhere, I, the one who have grasped the barrage system will become the king of dungeons.