Oh, I didn’t! I tried the game right now and it almost ran smoothly (some fps drops after stage 3, but nothing much). Managed to get to stage 5.
The game feels unfair IMHO. I know it’s a “survive the waves” type of game, but it reaches a point where is impossible to win. Also, after shooting an enemy there is a slight delay for it to die, I find it very annoying. Was that intentional game-design? If so, for what reason?
Also the text is too tiny to read easily and the screen shake is a bit too much.