Imperial Walker Arcade prototype released

IMPERIAL WALKER ARCADE PROTOTYPE RELEASED

Hi everyone! This is a short prototype of my hobby project. I had a lot of fun creating it, as well as playing. I just wonder if it's worth to put an effort into finishing the game and I also need your opinion on the game itself...

Check it out, tell me what do you think. Is there any place for a side-scroller games nowadays? Do you enjoy playing it? Is it too hard or too easy? What more would you like to see there? How many levels, how many biomes and enemies would you consider as enough? My plans are big :) but my time is limited :) Besides new levels, I want to add some mechanics for collecting currency and buying/upgrading walker gear, starting with a wide range of weapons, ending with some armor and energy bonuses.