good idea bad details
i like the idea but...#1 you need to be able to kill the annoying guards--even if you have to do a "silent kill" meaning you have to be behind them or what ever #2 some times the guards were so ridiculous and followed the target the whole time might want to look into that #3 a little longer energy--if you try to go invisable right before a guard passes you, you run out before he strolls past you and its "gglol u got raped"