Wow - for a free web game, this was unexpectedly great! Good level design, interesting concepts, new aspects added over time, much much larger of a game than I expected!
The conveyor level was not my favorite - as a casual gamer, I liked the opportunity to make 2 mistakes a level with the 3 lives. But slipping off the conveyor by bumping into a fire pole made me have to restart the whole level...
Tip for the players: if you are on a block one level higher than the guys with side shields, you can just wait for them to be right next to you and walk onto them - no jumping needed. Not sure if that was as expected to the developer, but it made those guys a lot easier.
Since the developer seems to be reading these, my suggestion to you: think you're doing yourself a disservice by starting with "normal" setting as the "way the game was intended to be played" with only one life. For casual gamers like me, I almost quit at the very start when I died a few times learning the rules of the game. I decided to try casual setting and then realized how large the game was. Because of the simple way the game starts out, I thought there wasn't much to it and wasn't going to invest more time figuring it out when every time I messed up I started over. I'm glad I stuck with it! But maybe suggest first time players start Casual and then go Rogue-like once they are more experienced? Think maybe people may be rating the game without having seen much of it...
Anyway, really enjoyed the game - thanks for making it!