You could always try this http://scratch.mit.edu/projects/demosthenes/770771
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http://scratch.mit.edu/projects/Borrego6165/2342381 i'd try this- it has scrolling, shooting, bouncing, jumping, moving platforms, good graphics and almost working lifts (you can only set it to one speed so far)
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This supports a walking animation, as well as walls, jumping, etc. All of the floors and walls can be the same color too (or the same sprite), there are no <color [] touching []> blocks used.
http://scratch.mit.edu/projects/MoreGamesNow/2175717
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