Wait a minute braniacs. Wolfrug had the best idea for Acid. Lokis lost key is an addon that you pop into the addons folder of a mod folder and voila; you have every weapon(addons and original) currently loaded by the game to choose from by accessing the Morsa gear section. I would get an idea of what ammo coincides with what weapon though as it can get tough deciphering classnames without a list to refference. You can drop an ammo crate at any time and rearm or if thats not good enough, you can choose the uber weapons mode in the magic category and have unlimited ammo for the rest of that mission. You can adjust your view distance at a whim, enhance your health by utilizing wolfrugs body armor, heck you could be nearly invincible if you so choose. You can call in arty strikes, carpet bombs, fuel air bombs and even a little camel pilot to help you out.
The good thing is that the effects endure throughout the current missions boundaries so if you need unlimited health and ammo to get through a tough spot in one mission but you want to try it without on the next mission you can. Each mission requires you to choose the option again.
Oh and I forgot; need a helicopter because the author's bird crashed due to scripting problems? Just drop one next to you and finish the mission out. Need a tank? you can have that too. How about some backup? Select some units to aid you in taking the next town or guarding your vehicle while you move ahead. basically, any weapon, any vehicle, anytime.
It is absolutely fantastic for testing broken or lacking missions and even having a bit of fun with.