No autosave?

[GameHog9]

So Im at the mission where you have to launch 3 nukes and get to an alien spaceship.

I spent an hour clearing out every room, mapping each corner, getting every PDA, then decided to stop before the spaceship part.

So when I restarted later I resumed where I left of right?

WRONG.

I get dumped all the way back to the beginning with no progress saved whatsoever. I mean, come on devs, patch autosaving or some kind of checkpoint system in eh?

[JoelFB]

Sorry! The game doesn't indeed have an autosave, or rather it does have autosave but it's only between missions. There were technical difficulties in making a true checkpoint system, so that's why it's like that.

You quit just before the end of that mission.

Estimated mission lengths are available here, might help allocate the time.