AmpedRobot Thanks a ton! You must have dug this thread out from several pages in the forum, appreciate it.
Glad you enjoyed some of the music, although I won't take credit for it -- also, just so I'm sure, what do you mean by the beginning? Is it the title screen and intro, or maybe the first half of the stage track? I'd be happy to know.
Press C to shoot! This game is a Mega Man Classic homage, so I definitely didn't forget to include that -- and it's how you expend the energy you absorb, after all! You do make a valid point about difficulty though, especially because I recently made the change so that you can walk past enemies without getting damage. I'll see what I can do with that.
As for the graphics upgrade, well -- I do genuinely enjoy pixel art, so I'm afraid that won't be too likely. But I'm also developing my interest in 3D, so who knows? Maybe Little Green Soldier will get a 3D revamp -- but that probably means migrating out of Construct 2 to, say, Unity3D.
In any case, thanks again! Glad you played it.