i found a bug on the last level: everytime I defeat the octopus to 0 life, I don't win... instead he suddenly start glowing red and gets over 800 hp...
great... I just achieved some kind of achievment, but the pop up box said: undefined :/
I also can't check my Achievments, it says: unable to retrive store information..??
i personally dont need a speed button, cos im busy collectiing coins, building new towers, and adding gems while the waves are attacking. if i need to wait too long for a wave, i just use the "next wave" button...
The difficulty is same, each level has a range for the random number