The game is heavily based on RNG's, so sometimes you get another gun in the second wave, sometimes on the fourth. We already have plans on making prices a little more consistent, since the prices go randomly between one and another value. I'm glad you played, and thanks for feedback!
I loved your work, really really good I'm forming a team where I already have a musician and some beta testers We are mostly Brazilians, but we are going to make a game in English, if you are interested in the project, or wanna make some questions, you can call me on Discord (@8ito)