Not satisfied with the current ending in void tRrLM(); //Void Terrarium? Even though it’s not clear, the game lets you put up a resistance and gives you an option of disobeying the AI’s order. This guide will teach you how to get the alternate/true ending.
Play the game as usual and carry the vessel to the AI. It will tell you to push the vessel into the green-lit machine. The screen will currently have the AI trying to communicate with you, with the text “Y: Take Vessel”.
Instead of pressing Y, press the left direction repeatedly on either the analog stick or D-Pad. You will have to keep pressing until the AI grows tried and leaves you alone by disconnecting its communication with you. By then, the screen might go back to normal (can’t remember).
You should now get an option to destroy the vessel. Destroy it and continue with the game.