Good effort, but I found it hard to get into. The 'left mouse click' from the web page instructions seems different than in-game instructions which says 'l' and 'k'. Once I followed the in-game ones I could just spam fireball; if you do that in a corner, it is basically the degenerate strategy that you can just keep going forever without getting damaged, since everything approaches you and then dies to an explosion. Possibly later in the game more powerful enemies show up and you can't do this any more but I didn't have the patience to get there.