I do like the idea, because you need to adapt all the time, BUT I hate movement - it felt too inaccurate, because you have too wide "1 step", which made picking up weapons more irritating than necessary. You needed to implement walk (slow, but very precise) AND keep jump (fast, but you are locked to your movement for 0.X seconds).
I played, rated and gave feedback-commented your game, please, do the same for mine. My game is mix of narrative based with top down shooter and has profound ideas about life (if you reach the end). Use left mouse button to shoot and arrows to move. Remember to collect power ups.