Hey Sorrora, thank you for the review! I'll look into the difficulty on normal. The difficutly is increased by number of players in Co-Op, you'll probably have to combine armies of all players to take down one of the bordering circles at start. The more players there are, the higher their strength will be, otherwise it would be easy to steamroll by combining 4 armies.

The basic and advanced menus are based on what a player needs when they start playing CE. They can play quite fine with everything in the basic tabs. Once they are familiar with that, there are much more diversity in advanced. This is to keep it simple at start. It's not intended to be divided by complexity of each building/unit category, e.g. basic tower in basic, advanced tower in advanced. That was not intended. Playing has also suggested that it's better to have similar things grouped together, e.g all towers in one tab. So if you have to choose which tower to use, they are in same spot, don't have to switch tabs to compare etc. But I get your suggestion as well.

Thanks again and stay tuned for updates, I'll look into the 30k-difficulty in coop thing!

Edit on 5 May 2020: The above mentioned difficulty glitch was fixed with today's update! Thanks to everyone who reported it and provided details, you're awesome and part of making the game better!