improving readme

README.md

@@ -8,19 +8,42 @@ DON'T STOP MOVING. Fly through an interstellar grand canyon as the walls slowly
 close in on you. Destroy wave after wave of enemies trying to get you. Dual
 weapon gameplay, one for killing and another for pushing the walls back.
 
-ENTER to start at title
 
-X to shoot Alpha gun, Hold C to charge and shoot Beta gun.  ESC to quit
+How To Play
+-------------
 
-The Beta gun will slowly press back the wall when it hits an enemy, but will do
-little to no damage. The Alpha gun is used for dealing damage.
+From the title screen press ENTER to begin the game.
 
+During the game you control your ship with the arrow keys.
+
+As time goes on, enemies will fly at you and the walls will slowly close in.
+You have two guns to deal with both of these problems:
+
+Pressing (or holding) X will shoot the Alpha gun, a blue bolt that will kill
+enemies. Kill enemies to earn points.
+
+Holding C will charge and shoot your Beta gun. A pink bolt that pushes the
+walls back when it hits an enemy.
+
+The bar at the top is your health. It goes down when you take damage. The game
+is over when your health goes to 0 or the walls crush you
+
+Tips
+------
+
+Some enemies have a chance to drop powerups. The red powerup will restore some
+of your health. The blue powerup will improve both of your guns.
+
+Try to get the blue powerups whenever possible, this will improve your Beta gun
+so you can push the walls back when they start to close in really fast.
 
 About
 -------
 
 Made in 48 hours for Ludum Dare 48
-(c) Leaf "leafo" Corcoran 2012
+(c) Leaf "leafo" Corcoran 2012 <http://leafo.net>
+
+Must be run with Love 0.8.0 if using the `.love` file.
 
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