Killing the dude at the end is easy; you can just charge (double tap the left or right arrow key) and press A to knock him over, then jump to the opposite side. When he wakes up, he'll be facing away from you and will swipe in the wrong direction, giving you time to knock him over again. Repeat until he falls = easy win.
7 is easy guys.. just take advantage of the fact that bridges can be built off the tops of slopes. So if you build a block, then put a slope on top of it, and then join the bridge to the top of the slope, you've gained a free block (in terms of height).
It's a good game, but needs more than just eliminating targets- how about creative solutions like shooting explosive barrels, shooting something noisy to distract a guard, etc. Also, the "More games" button opens the "Crazy Monkey" page in the locked size frame, so it is nearly useless. It should ideally use a new browser window.