Well done!

this game has good gameplay that is difficult, even fustrating at times, but can be tried over and over because it has no lives system. this is good because it makes you want to play this game untill completion. the music and graphics both fit the rest of the game and make it more enjoyable however they good be improved, in particular the game needs sound effects.
the main drawback however is the glitches:

___________________________________________
ERROR in
action number 1
of Collision Event with object Laser
for object Dot:

Error in code at line 7:
sound_play(Zap)

at position 13: Unknown variable Zap

this causes the game to pause and makes level completion easyer, you can move your mouse into position and press enter to ignore it, effectively allowing you to teleport. this error ocurrs when you are hit with a turret.
also when you are hit with an eight way turret the highscore table is show and the game restarts, this is probably because the same instance is used as he survival mode version

In conclusion this is a great and addictive game that still has room for improvement.