Hello... firstly, this isn't a virus. I saw some other comments that implied it was, so just wanted to put people's minds at ease.
Secondly... if you click, the player does a slide which kills enemies. So... that's how you get past the first obstacle. It seems you can only jump over holes, and slide to kill enemies.
Whitefox, I really liked the look of the game! For a future build, it's probably worth adding control instructions so that people realize they do have the ability to attack.