I object!
Actually if you get your Projectile up to 75, you fire 4 arrows at once from your bow, which is quite funny and powerfull, especially if you have Lord Inut's bow

Also its worth nothing that there are 2 mods for Arx I have found online thus far.
Enchant and Balance mod -> http://www.ttlg.com/forums/showthread.php?t=125765
And a nvde patch -> http://www.gamershell.com/download_3823.shtml
I'd really love and appreciate it if any of the great modders and artists that create texture replacers for Morrowind and Oblivion give this game a whirl, since the game really needs a makeover, despite still looking pretty good for a 2002 game.
I am also in the process of studying the scripting language Arkane used, and will attempt to make my own mods, its just that i don't have the time right now :/