For You, But Not For You - Fallout New Vegas

A lot of the text in the game that isnt dynamic like Challenges and SPECIAL descriptors refer to dudes -- The Challenge for achieving speech success is called "Sir Talks-a-lot", and the descriptions of the SPECIAL skills refer to "cowboy".

The Rifleman - kill with a rifle-grip gun...

Lord of Death - kill X baddies

All clothes in the game, when they are sitting in the ground look like men's clothing -- except the sexy sleepwear and bonnet.

All the perks have images of vaultboy, unless they are specific to women, then they have vaultgirl.

The more I look, the more there are :(((

No one has actually referred to my female character as a dude yet, so that is a win.

For one of the missions, in voice only, not text, my character was referred to as "he". (the ghoul rocket-ship quest).