100% Achievements Guide

Date Night: Watch a film or clip.
Starting from the Main Menu click on Theater, then Community, and then select Filters in the bottom left corner. Select 'Highest Rated' A list of titles should appear. Select any clip and then click Play. The clip will need to download, afterwards it will load and the achievement should unlock upon viewing the clip/film.

Ready For Deployment: Reach rank 10 in Combat Training.
Again, Starting from the Main Menu click on Play then select Combat Training. From here edit the lobby settings to your liking then enter the match. it will take around 150 kills for you to reach level 10.

In the Money: Finish 5 Wager Matches "in the money."
For this Achievement It is highly recommended to follow this guide It does a far better job at explaining how to unlock this achievement. One thing I should mention that the provided guide doesn't however is this: Black ops 1's Multiplayer uses a server browser instead of the standard quick play method from it's console port. This will still count towards a players level progression. So when the guide says to reach level 2 one can indeed do this from the in game Sever Browser found in the Main Menu just after clicking Play.