The controls can be viewed from the pause menu (press esc) and the current objective is displayed on the top left.
For level 2 you should account for the delay when giving the instruction. So release the space button a few seconds before you would actually want to.
I can understand the frustration with the last part of level 2 (which is intended). If you can't finish the game, it's fine. Thanks for trying!
I uploaded a new version with skippable levels if you want to try again.