There is a bug about bullets. Or rather a feature. Bullets have limited lifetime of several seconds... and this lifetime continues to tick even under pause. So, if you found yourself before barrage of bullets, click to pause, wait 10 seconds, unpause game - and bullets will disappear. I didn't want to share this bug, but using it i managed to pass wave 18 - and found nothing! My team just keep going on clean empty road infinitely. Obviously, developer though to kill any player on the end of 18 wave and didn't bother to make wave #19 etc. This isn't good, if you want to cut survival (in most games it is infinite), make some trigger after seemingly impossible obstacle. May be there are some geeks, who can overcome that obstacle in any way... and fall into vacuum :( this is kinda disappointing
+ so developer could see it and improve this game
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