This is a typer game. Complete the typing tasks to hack the security system and overload it to shut it down.
I got stuck on a 6-key-hold problem. There is a limitation on many keyboards in which the keyboard cannot process too many inputs simultaneously, and it seems that my keyboard also hits this limit before 6. I did get through one 6-key-hold problem, so I can tell you that this is not a limitation of the game you made, but a common hardware limitation.
An unfortunate result to an otherwise well presented entry. The lessons learned here will go a long way to shape your development as a game dev.