My hands are sore from playing the second or third level in the Cliff world countless times. I can get up right up to the "G" letter in KONG but then I always screw up with the timing. It's due to the platforms you stand on immediately collapsing beneath you. In the meantime, you have to jump on top of a specific enemy's head to snatch the letter and then run like hell to get off the falling platforms. That part of the level is unforgiving.I managed to get past it once, but then jumped too early when the second stone platform slammed against the third one, causing it to swing out to the right side.
World 5's secret level is the hardest one for me so far.
World 5's secret level is the hardest one for me so far.