Thanks for the comments! I didn't design the game, but the batteries were blocking you from getting some of the motherboards. If you attack them, they vanish (about half as strong as enemies) and then you can collect the motherboards. 

Spoiler----> This becomes important knowledge in the final boss battle.

Thanks for playing!

Yeah when we were designing the game, we intended to have little popups that would explain what each item was (i.e. enemies, pickups, and destructibles). Unfortunately we ran out of time and couldn't add them in. It is definitely something we intend to do and will hopefully have after judging concludes :)

Thanks! I went and watched your stream. I was rooting for you and felt dismay when you and the audience reasoned that the batteries would disappear if you defeat all of the bad guys! If you hit them enough times, they disappear and you can collect the motherboards.

That's great feedback about the character's falling and gravity level. I don't know anything about the programming side of things, but yeah when I have played these kinds of games, the physics of the jumping feel about like what you described. Come to think of it, the hardest or most frustrating part of the boss battle for me was the feeling that I was suspended or floating in air--felt like I had no control while I was being shot at.

Thanks again for playing!

Thanks! This was a fun game to work on. I just did the music but I know our programmers and artists put a lot of time and effort into creating it. 

I'm on a Mac, so I didn't even think about that, but yeah hitting Shift five times can trigger Sticky Keys on PC.  Even though I didn't have Sticky Keys problem, my personal preference was for the ranged attack, too. :)

Thanks again for the feedback.