If you want to make fast Progress, mass up artifacts and pray you'll get one with "+x% Gold per click". I don't know what those percentages are based on, but even +0.5% means ALOT of Gold.
on the axis campaign, the difficulty on "hard" is álmost a nice curve... and then you get to the Bordeaux Level.
And just when you think you finally managed everything hard, Raseborg Castle is just the same that too, except the enemy has 3 times as much everything and spawns multiple heroes to attack you at once. have fun.
In every principals life, there Comes the Moment when one has to decide between keeping the 2 Grade 30 students that carried the entire School through the year... or to graduate them and get a perfect first year.
Easy decision.
Apparently, the Fire Supports' Resupply upgrade is the difference between endgame-Mission tanks destroying you and them being a welcome way to get rid of the enemies' morale.
Other flash games lag just because they're played for a while, this one runs so smoothly I can't even blame the lag despite loads of pixels being everywhere.