(I think I deserve that considering they are my guns )

Alright Nightmare has been updated!  The main focus of the update was the weapondry!  With the help of Saintruner, I got some excellent gun sprites (although not all can be seen yet, since only ammunition for the pistol has been added to the game so far) and finished the coding for all 5 weapons.  They are as follows:

Axe: The first weapon you get, this trusty axe never runs out of Ammo, and is excellent in close situations because of it's wide range of effect.
Pistol:  The good all-around weapon, you can find ammo for this gun all over the place, and is good in many situations.  It has a fairly large clip size, holding 25 bullets at a time, and reloading is fairly fast.
Magnum:  A monster of a gun, 2 shots from the magnum will kill a zombie instantly!  Be careful though, because the magnum only holds 6 bullets at a time, and can be slow to reload.  Make sure to ration your ammo for the important moments!
M16: The M16 machine gun mows down enemies like no other.  With a massive 45 bullet clip, the bullets never seem to end!  The weapon has extremely fast reload times as well, just be careful not to waste all of your ammo by spraying!  This is the first gun that also doesn't have 100% accuracy towards the mouse.
Shotgun:  What better weapon to fight off hoards of zombies than the traditional shotgun?  This weapon has enough punch to kill a zombie in 1 hit if you manage to get him up close, and is exceptionally good when you are getting swarmed with enemies.  With 8 shells to a clip, and slightly slow reload time, watch out to make sure you don't get caught reloading!

Another large addition included in the update was a brand new shadow engine, thanks to the prompting of Shmibs.  Beforehand, there were restrictions and inaccuracies of the engine that went unchecked because I did not know how to fix them.  The new engine improves shadows in several areas:

Static Shadows: Static Lights now cast shadows on all objects, including crates and other semitransparent objects.  This only happens at the highest quality setting though, as it is fairly speed intensive if there are a lot of objects and lots of lights.
Realistic Shadows:  Additionally, the shadows cast no longer work by painting over with a grey polygon, but actually erase parts of the light source, which is much more realistic.  This can be seen when the flashlight is pointing at a set of crates.  The crates will block the light that is sent at them, but crates not in  the light will not cast shadows anymore.
Static Light Interaction:  Before, due to the way shadows worked, two static light sources could not intersect and both cast shadows at the same time.  With the new engine, any number of static lights can be intersecting and casting shadows all at once!
Muzzle Flashes: And the last addition to the lighting engine is the effect of muzzle flashes!  When you fire your weapon, the area around you will be briefly lit up, and there will be a burst of flame from the tip of your gun.  This can even be used to find your way through dark areas as a last resort.

Additionally, death no longer simply errors, but actually restarts the area from the beginning like logic says it should   So what are you waiting for, try the all new Nightmare engine right now  And if you needed any more incentive, you can press M to unlock all of the weapons with over 9000 bullets each!  Just make sure you already have at least the axe or else it will complain.

Alright, another update!  This time I have completely re-worked the physics engine, both to make a bit more sense, and to make adding objects easier.  Plus, now you can push around boxes I have also taken advantage of a new Greenfoot feature to rework the progress saving method.  Now you can quickly load any chapter that you have already visited, and progress is saved between plays if you have Greenfoot account! 

I also added a new area, that can be accessed by pressing L+Q at the same time once you are ingame.  It's pretty nifty, and there are some new enemies as well It's a bit short for now, as it's still in production, but cool nonetheless!

Nice! Very beautiful Is that a door frame or a missing puzzle piece...?
Oh, I think I crapped my pants a few times while playing Nightmare.

Oh, that screenshot was from Nightmare. Looking good with the shading!

There used to be a way to play this on the browser, is it still possible? I can't find it :s

EDIT: Game is currently not working on the gallery... trying to fix

I see, I'll try that Greenfoot thing, I hope it's cross-platform. Good luck fixing it!