feature update request re: poking the crusher

[misto]

oh yeah. the chance to have your arm pulled off should be lower if youve got adamantium skeleton(you will be more likely to be simply pulled in and gibbed because your arm wouldn't give way, strong skeleton is not always your friend), and higher if it's a robo arm, even higher for light robo arm.

having your arm pulled off resets your score so folks dont artificially inflate their score by running to and fro having loads of light arms bolted on