Great core mechanic!
I like how you made it more interesting by swinging and manipulating gravity, that is nice design to twitch the core mechanic of the game
I like that you wrapped game with some lore and world narrative, that is something that always make game much better :D
To improve I would add possibility to repeat the level instead starting from beginning and some button to restart level so player won't be waiting to be "dead" :D
Just good job and congratulations on your submission!