Unfortunately got stuck in the hub room - the one with play and credits. Can't click any of the map squares, though I have been able to, this session. Can still navigate with wasd and control the camera with left click.
16 has got me stumped. Wave 12 and 13 come along and I can't manage it. Rockets do too little damage, cannons can't dispatch the groups fast enough, dots can't hit enough of them. I give up, after 5 tries.
 "Dunno"){kind=icon}
 "The Illusory Wall"){kind=icon}
 "Helix Defense 2"){kind=icon}