Here's my full playthrough if you need any help surviving to the 12th wave.
I recommend going into the settings and turning the stick speed / sensitivity up so that way you can keep up with the faster moving enemies.
Intro 0:00
Explaining Achievements/Trophies 0:20
Wave 1 1:20
I'm not giving up! 11:00
Killing two birds with one stone 11:15
Having burnt one's boats 11:35