The Royal Weapons you receive are indeed completely random. You have a chance of getting either riffle. machine gun, lance or sniper riffle. You are not garanteed to get each of them eiter, in fact you have to play the designated weapon stage couple of time to really get all 4 of em. And each stage have their corresponding weapons.
Example: you can get 2 riffle and 1 lance in a stage. Or 1 machine gun, 1 lance and 1 sniper. Or 3 machine gun. Or... you get the idea. So its really easy to miss one and not know if you didnt keep track which stage and weapon you missed.
I made a list so people can verify which they have and dont so they dont have to go through the pain i did redoing every stage and reloading until i get 1 of each royal weapon.
Hey Xel, any chance of you posting pictures of the weapons in question? I unfortunately don't have a PS3 yet, so I've been having to rely on YouTube videos and thus far no one's done anything really in depth with the weaponry.
Unforntunately I wouldn't be able to post any pictures of the weapons, but you wont be missing out on much. They dont have major designs of omg super awesomness holy halibut batman or anything like some FPS games. More like add-ons and variations of the original versions. (Royal weapons are blueish compared to their original counterpart with slightly beefed up size and decorations, but thats it really) Worship this game for its intricate beauty, art and pure awesome gameplay, not weapons looks ^ . ^