The graphics and the mechanics are good. Animating torches in background would have been great. N key sometimes unresponsive, but not too bad. I like how the signs throw up text when you walk over them. You could do a lot with this.

I am going to make a mod to this, I hope to get it done after the space platform challenge, I am going to make the bridge fireball sequence repeat, so when you start a game, the fireball sequence that happens on the bridge will be used for every bridge, so once you get the pattern down it will be much easier to cross, I hope to add an archer when you get past level 4, but at this time the bridge crossing is tricky enough as it is.

An Exception is thrown in the applet: CacheEntry[http://www.greenfoot.org/sharedjars/jl1.0.1.jar]: updateAvailable=false,lastModified=Fri Aug 17 07:49:55 EDT 2012,length=143160 java.security.AccessControlException: access denied ("java.io.FilePermission" "instructions.txt" "read") at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at sun.plugin2.applet.AWTAppletSecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkRead(Unknown Source) at java.io.FileInputStream.<init>(Unknown Source) at java.io.FileReader.<init>(Unknown Source) at Instructions.readInstructions(Instructions.java:21) at Instructions.<init>(Instructions.java:15) at Table.<init>(Table.java:37) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at greenfoot.export.GreenfootScenarioViewer.instantiateNewWorld(GreenfootScenarioViewer.java:323) at greenfoot.export.GreenfootScenarioViewer.init(GreenfootScenarioViewer.java:226) at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.init(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) looks like you are trying to read instructions.txt from a local file, I think you will have to change that to something like this http://docs.oracle.com/javase/6/docs/api/java/lang/Class.html#getResourceAsStream(java.lang.String) not sure since the source is not here.

You have killed us all!!!!!! AAAAAAHHHHHHHHHH!!!!!! NNNNNOOOOOOOOOOO!!!!!!! . . . Maybe publish it later?