Game was a little easy once i had a few businesses bringing in the money. For those struggling to progress simply conduct steal research missions (for what ever tech you missed) and bank robbing missions to lvl up to 7 and activate the destroy world thingy.
I hit a bug half way through wave 12, it switched me to the build menu and stayed there for every subsequent wave instead of switching to the spell menu.
A few comments. Can't seem to upgrade any thing to lvl10.. stops at 9 even though it says some things require lvl10. I've been involved in 2 battles at once a few times, needs to make it wait till the current one is over, and as stated could use a tutorial to help begin with.
As per every one else, set the goal for each level to be lower. Requiring 300 from most lvl's leads to dumb luck winning out rather than setting your man off in a decent direction.
Biggest complaint is that enemies seem to spawn inside you meaning action is all ways focused where you've all ready been fighting, as your trying to collect the cash you get for killing them.
 "Chaos of mana"){kind=icon}
 "Death Dice Overdose"){kind=icon}
 "Mastermind: World Conquerer"){kind=icon}
 "The Tower"){kind=icon}
 "Divine Generals"){kind=icon}
 "Chain of Fire"){kind=icon}
 "Space Pips"){kind=icon}