For the skull collection missions just take the bug eyes and hold space at the start of the mission to back off the screen. After you are off the screen for about a minute use the bug eye power to kill all humans on the screen, get skulls, repeat (keep holding space down).
for the last level you the ring of immortality, tribal furs, and regen2 shield - you get back 14hp/round, 14hp when you match 4, 28hp when you match 5... easy with some create or destroy all of a gem type spells.
particlemans deck is good, but the best is: 21dwarven boon, 10siege engine, and 2reapers bounty - 10second auto-win on any map. (instead of taking 30second)
8gold mines, 8peasants, 2parting gifts, 2crystal mines = easy fast farm on Elder Gornash lvl3. Drop all the gold mines in your hand (hopefully 4), then a crystal mine, get 2 peasants killed so you can cast parting gift (draw cards as needed)... then it's just feeding peasants to the beholder until you win.
Ugh, after I hit level 103 my game bugged... guy is frozen in place, games runs really slow and he keeps leveling up over and over now... does the XP for next level roll-over into a negative number at that point?
Waizer (last fight): Iron-Shell, then Force, then Biofield, then Disintegrate. other fights you can Iron-Shell and spam Sacrifice to beat (it always hits).
Mutant: FORCE is the best skill in the game, even better when you get FURY. BIOFIELD reduces incoming damage and makes DISINTEGRATION almost always hit. disintegration kills 50-75% of the time if you have your stats right, even if you don't you can use Force to get you to 120 strength... yeah, auto-kill. As a mutant I would always go biowave/combat. Oh yeah, IRON_SHELL with the disintegration build makes you an unkill-able auto-killer.
there are 2 ways to win, the evil way is really easy, yeah. Doing the desert patrol (get rid of bandits, then the corrupt president) is much much harder.
no, you don't have to kill canada to get greenland, you have to destroy 70cities... if you click on an area while its locked it tells you how to unlock it.
once you get a fat stack of jewelry you can bankrupt wealthy towns by selling it, then they realize they have no money and the demand for jewelry goes to 0, so you can buy it back for next to nothing! :)