Eternal Spectre's storyline is the main driver for the whole game. In Eternal Spectre choices matter.  Choices matter and actions matter even more. In Eternal Spectre, a small action may go a long way. For example, helping an NPC Survive can go a long way as the NPC might open a different path later in the storyline. Side quests are tightly integrated with the storyline to give a proper sense of the world and promote a more cohesive and immersive story. In Eternal Spectre, you are free to act however you like, but be prepared to face the consequences