@bkehrman if you test some of the new units and skills you will beat lvl 15 in less then 2h. You could always ask for advice on chat and get the solution in matter off minutes
Unfortunately game is organised by Warrior stats so tip to all who want kill guardians - dont lvl up warrior at all on the run - just archer and use lots of protection
Ottava Auto save works but if you wanna make it more often change it in settings. Idle works - as long ur storage has enough space... beside that blame Canada
Guys complaining about cerberus - training lots of veterans and then snipers when become available and using protection solves 99% of problems in the game
@Argro its much better after couple resets. If u have problem with lvl 15 invest with veteran or sniper - at some point snipers get way better then veterans. I had problem with beating lvl 20 - somebody said that archer needs to have 620+ damage + all protections spells -it helped me a lot. after Beating lvl 20 i went straight to 29 -using corrosion a lot. It allowed me to double resource production with perks. It takes time but game actually gest easier.