Thanks a bunch for playing!
You probably kept dying because you didn't fill the bar at the bottom of the timer. It was meant to be there because world moves when you do so you could just camp and not spawn extra animals without it.
Achievement is really barebones implementation. You get it when you surpass your previous score in a new run. Glad you liked how sound tied, I wasn't the most confident about that part.
That's a nice profile pic btw