It doesn't spawn enough enemies in the time limit to finish this mission. You only get to around 35 before the timer runs out.

Was wondering from start to finish how long does the game take

add achievements you will earn sales

https://www.youtube.com/watch?v=nGoj0mGfCz8

Is there a way to invert Y mouse at all or remap controls? Really hard to play without invert mouse at least since I'm used to it and standard mouse messes me up :)