Hey! Thanks for the feedback of this game, I made it in two weeks, 2 years ago, I was very into doing it but I didn't made it to be released in a big site, I put the game here so I could send it to a friend of mine, and even that the game hadn't instructions or how to save it, there have been over 100 thousand people who played it, I am moved by that and probably gonna start working on a new one.
Hoping its not too late the game commands:
Arrow keys: Move your character
Space: Jump
'Z': Shoot (when you shoot a SAVE box it will save your game)
'R': Restart the game from the last save.
The game itself have only 4 stages, I was making the fifth one to make a BOSS but I had exams at the time and ended up leaving the project.
Thanks for playing!