Best/Most iconic First Level/Intro in a Game?

[curl-6]

I did really love the opening level of Battlefield 1, with itsa sombere tone reflecting on the impact and cost of World War 1, followed by a demonstration of its brutality as you fight until you're overrun and see the epitaphs of the soldiers you played as.

It hits hard and brilliantly sets the tone for what follows.

"What follow is front line combat. You are not expected to survive."