Zeitlos: Tides of Change (2016)

Publisher's blurb:

The world of Zeitlos is tumultuous, kingdoms go to war and religions vie for power against one another, but there is another power that is often underestimated and forgotten, the merchant guilds. One of these merchant guilds is known as the Imperial Trading Guild, the guild is headquartered on the island kingdom of Stark Insel but is ran and operated by agents of the Sanctum Imperium on the mainland. It is this guild that has hired our adventurers, seeking help in establishing a stranglehold spanning all the kingdoms, however, they soon find themselves embroiled in a conspiracy orchestrated by an ancient and dangerous group.

Campaign runs the span of level 1-20 over 195 pages and over 40 combat maps, set in a world of its own but could be adjusted to fit into other settings.