there are 4 new objects:
2 vertical magnets, stop sign, and barbed wire
Robbo can walk on a stop sign, it will disappear. stop sign blocks birds, blasters, guns, bears, eyes (butterflys), magnets
barbed wire - when robbo walks on it, dies. barbed wire cann be blown with a momb, blocks guns, bears, birds, eyes(butterflys), magnets
objects added.
now barbed wire is represented as radioactivity sign (animated)