to end lvl 20 just press UP and LEFT to let him jump, after 2 jumps press SPACE BAR, than repeat it for something like 200 times, than he will jump on his jumping shadows and will reach the goal...
no way, this game sucks:
hard mode -> develop economy -> military development -> important structure -> than build 4 rifleman and defend -> improve equipment -> attack -> victory... boring
I began this game 20 minutes ago, finished now. It's very easy to hack any level with different path or different use of items. Too easy in my opinion.