Hey thank you for your feedback!
If you died and got the load last autosave you probably didn't reach the end yet! If you found all the items (filled vial, research data) and talked to Wren and Miranda you should be able to come up with a plan to get into the control room and from there the game has a short ending cutscene. If you cant figure out how to get into the control room, make sure to look all around the lab carefully.