It's a very interesting game:
Strengths:
Nice graphics, simple but interesting;
Great atmosphere;
Interesting gameplay, I like the inspiration from jetpack joyride;
Quite original;
Leaderboard online, few have put it up, great job!
Points of weakness:
The sound effects are a little too loud;
The player is a bit slow;
Some background music would have been nice;
The character flickers a bit while walking (I don't know if you played the game with Unity [but I think it's similar for others too] but if so, to fix it, try setting Rigidbody2d to interpolate).
Overall, given the short time frame, you did an excellent job!