Not sure I got the concept: Little people Running Torwards a Giant tree, To be eaten by a nuclear Eagle's Babies. Wow. Maybe you Should run the Other way? :P But. We can't see what's at the end of the screen. Maybe free ice cream! ^-^
The clones sure can be annoying. But. You did think of something Nintendo Didn't think of.
Invisible Walls at the ends of each Platform with a [Goomba...?] On it. The Char. Can pass through them. But, The [Goomba...?]'s Can't fall off. They bounce off and continue their Path In the oppisite Direction. Great Idea. I'll give it. 4/5.
Lol. I was on leave for 35 days... Because I died. So. God kicked me out after 35 days. [And What a glorious 35 days... Playing Flash games in heaven. On a gold computer. Lol.]