First of all, the targeting is often an issue and there are issues such as enemies piling up in a corner, and no skills are targeting corners after the rampart is damaged beyond a certain point for some reason. For the upgrade menu, there are 3 sets of gems you can equip (3 equipment sets), but when you inlay a gem into one of them it gets used up and can’t be used for the other 2. This defeats the purpose of having multiple selections, as you’re forced to just moves gems around anyway. Instead, make each of the “outfits” separate, so each one has all the gems available. Lastly, there is an option to quick combine, but there seems to not be one to just combine. I’m forced to auto combine all my higher level gems to combine the lowest level gems. Also, there’s a yellow currency used to upgrade the rampart but it seems like there’s no way to use it. These are just the issues, but honestly this is a great game, great concept, and it just needs some tweaks. Edit: got the rampart upgrades. Given that there isn’t a wiki, I think some things (like rewards for challengers) should be explained with a hint at least once. Like “this will be used later when you are level x”. It’s fun to discover things, but not knowing a part of the fundamental mechanics is annoying.