A nice take on the theme and i like the bonus eco theme since you made this a double entry.
Gameplay wise i like the grid based movement, it kinda has a Megaman Battlenetworks vibe to it.
Spritework and music are awesome, can't say more than that.
It was quite challenging to play all the way through, during the final rounds for charging up and shooting the boss, thigs get wild there are so many trashcans fireing at the same time it was hard to keep up :O
Other than that i still had fun and managed to reach the end, and i have to say congrats for even having time to have little start and end cutscenes.
Overall good job :)