This is a pretty good shooter. The camera angle makes it hard to control and the game play is fundamentally 2d. Sometimes I get snagged on terrain. I would like to be able to use the side room windows/ledges to remotely disable robots before coming across them.
At its core this is a game about showing off unity, but that isn't necessarily a complaint.
your hit testing is clearly only being done at the edges of the circle.
the falling through platforms is the game killer. since all the platforms are rectangles, and the character is a circle, this is not hard to fix. fix it. abstaining from rating until then.
You implemented the 3d aspect fairly well (for flash anyway). the problem is the mechanics itself are slow.
-faster plane (space the rings farther out
-nearly unlimited fuel
or just forget the jumping through hoops aspect and make it a WWI combat game with the red Baron and trenches and whatever else panders to people these days.
this game is really excellent but it gets ruined by the implementation.
1. it moves to fast. the whole point of a puzzle game is that you have to think through your move. you can't do that if there's only 1 or 2 seconds before you have to move.
2. the grid alignment isn't obvious. please add a visible but ignore-able checker pattern to the background so I can get which things lead where.
I'm giving this a 5/5 because it deserves a better rating than it has.