Have one coupon. Just type here and i'll send it

I open the game and when I click on any menu button I get the following error: Runtime error 3002 - Could not load sound at line 6043

Dear devs, are there any plans to add achievements to this game?

I got one card after 8 minutes but nothing in the next 1.5+ hours. Are the card drops working?

can someone please explain what you have to do with the waves. I dont get hit by anything I have 8 hearts and still dont pass one wave? I dont understand...