1. The tutorial has glitches and I got stuck on a chest unlock page where the guided "next click" was hidden behind the current screen and I couldn't exit or click on the recommend spot. This required a refresh.
2. Over the course of 20 minutes, I had to refresh another 4-5 times and got stuck on the 100% loading mark 2-3 times.
3. Games are normally long term because they are fun and have a lot of content. Making your game very slow so it takes a long time does not make it better or long term.
I invite you to up-vote so that the developer can be sure to see these detailed comments. Rated 1-star and refused to earn the badges to keep the counters as low as possible. Good luck LONG-TERM!
***Do not "remove" upgrades. You lose souls and the upgrade.***
Hard badge was pretty easy. The trick is to take as long as possible to kill zombies. Walk in a direction where there are no walls and continue walking in a straight line until you are outside the wave zombies. Then all you have to do is out flank them by walking in straight lines away from the mob. Try to give your timers as much time as possible to recharge. My setup was:
2x health, 4x regen, 1x protection, 3x movement. 3x damage, 2x fire rate, 2x ammo, 1x penetration, 1x knockback, 1x projectile. "+" if it helps so others can see.
I think this game is great. One of the few games I've kept playing more than 24 hours later without badges. I see options to export game and the option to import but is the feature working?