Little touches like that are present throughout the mod. 'You found a gun!' she exclaims, when I return from a solo excursion carrying a new Combine rifle. And you know what? I did do a good job! I'm a good science man! 'Good job!' she says brightly, after I solve a puzzle to get an elevator working. She doesn't gab at you by any means, but she does talk a lot more than I would have expected. Obviously, there's no brand new dialogue for Alyx, but the modder managed to collect some extremely appropriate bits of Alyx's speech clips from the original games and put them into the mod in a way that feels entirely natural. What does make Deep Down feel nice and Half-Lifey is hanging around with Alyx again.