Alyx's Gun

Overview
Alyx's Gun is an unusual pistol-like hybrid gun, previously used exclusively by Alyx Vance.

Alyx's Gun has a selective fire feature that allows it to fire semi automatically, in three round bursts, or fully automatically. The fire mode can be selected via the secondary fire key.

Acquisition
Alyx's Gun can be found in Water Hazard. During a segment where a Hunter Chopper is chasing the player in an airboat, a few Citizens can be found standing on a platform, appearing to have set up base there. Alyx's Gun is on a table in their setup.

To reach it, the player needs to get out of their airboat, then has to climb on top of it to jump up into the Citizen's base.

If Alyx's Gun is missed there, it cannot be found again.

Advantages
-Capable of firing in three different modes.

-Large capacity of 25 rounds.

-Quick reload of 2.5 seconds.

-Uses the common pistol ammo.

-Moving doesn't affect accuracy.

Disadvantages
-No zoom.

-Can only be found once.

-Inaccurate for a handgun.

-Deals low damage outside of headshots.

Tactics
-Always aim for the head. Alyx's Gun is quite weak if you aim for the body.

-As this weapon doesn't have any zoom of any type, use Alyx's Gun at closer ranges.

-Use semi-auto or burst mode if you need precision.

-If you have to deal with multiple targets at once, or your enemy has Riot Gear equipped, switch to automatic mode.

-If an enemy has a Riot Helmet equipped, use automatic mode to take it off quickly if bodyshots aren't an option.

Trivia
Interestingly, if Alyx dies, her gun cannot be taken off of her.

A Citizen can be seen holding Alyx's Gun in Eli's lab during the elevator ride, behind two Vortigaunts.