*****SPOILERS***
as a reply to smurfs_r_takin_over: select the rope and move it to the wooden stake. It will make a grapple hook...then select the grapple hook and click on the fat guy...an animation will show you how he gets over the wall...and that's the end...
now, as for the game itself...I like the general idea...however I think it would be a lot less time consuming if you made hot-keys for the actions...that way, you don't have to keep clicking from walk to grab and so-on and so-forth...besides that...I love the concept, the voice acting, the animations, and the wit and humor! This is great! I can't wait to play more :)