The start was a bit hard to get, but as soon as you understand your bodies become platforms, it's really enjoyable to go around the level and shape your solution little by little !
Viewing post in Die, Harden jam comments
With pleasure :) First the levels "lock" and "unlock" icon have really similar shapes, colors and silhouettes, making it hard to understand that one is unlocked from the start (having a "play" icon instead of the "unlock" icon maybe ?)
Then, after losing the first time, having a "game over" menu is a bit confusing as dying is part of your core loop I initially thought I made a mistake and went back to the menu, then tried to reset when I died again, and then only finally tried "play again" and discovered what happened ^^ As your core loop is focused on dying and coming back, you might want to avoid showing the screen as much, and instead making the player respawn immediately without a screen stopping the game (maybe like how Super Meat Boy does for example) .
If you're worried about the players not understanding how to reset, you can create a level 2 with an intended trap that forces the player to be stuck, with a text saying that you can reset by pressing R.
And you can keep a pause menu with the Reset/Main Menu/Exit options for those needing them like that.
Of course that's just my opinion, and again, I'd like to highlight that the rest of the game was really nice and the mechanic was really well thought, this is just a hitch in a very nice project ! :)