One thing I've been experimenting with for a while is how to make melee fun in an FPS. This is an experiment I'd like to share with other people and see if I've succeeded.
You are a dude with a sword and a shield. No real concept, no real story, no custom graphics really yet since this is just an experiment.
Hell, no real other weapon replacements yet, so really you'd just march around the first level.
Primary fire swings your sword. Clicking it at different times results in a different combo, much like Devil May Cry, and there are three different combos. Holding it down charges up your sword for a lunge. Alternate fire uses your ranged attack, hucking a spiked alchemical grenade. Just in case an enemy is too far for your sword.
There are also two custom buttons. One hefts up a shield, which slows you down and protects you from all ranged attacks and most melee attacks. Enemies straight up in your face will be able to work through the shield anyway. Another button is a kick, which knocks enemies back because I still think that is the best feature in Brutal Doom and am intent on ripping it off in everything I make. You're able to use the buttons in different scenarios, like blocking an attack mid combo and then finishing it off later, or "kicking" while blocking to do a vicious shield bash.
Here is a screenshot of a shield. It pretty much demonstrates nothing about the system, but it is a pretty shield. Neoworm did a good job on it.

Here's a download. Sorry, Mediafire link for now, I'll find another host later.
http://www.mediafire.com/?02hrw9ajakyqe0r
Please enjoy, and let me know what you think.
Spoiler: CREDITS