Just thought I'd like to point out that while a rocket launcher says "It's the most powerful gun" it's much less powerful than 5 level 5 lazers in the same place.
If you fill every sqaure with level 5 lazers, the end boss goes down in seconds, if you fill every square with rocket launchers, you can't defeat it.
The last level, the real last level that is, is much much easier than the fortress because I'm gaining levels every couple of seconds and thus are never really damaged at all, it was a walk in the park and even managed to upgrade all my weapons to gold, though even at level 6 the S-AIDS spreader is absolute garbage.
The easiest way to unlock new characters is by following this order:
Tankman - Untill you lock Cowboy
Cowboy - Untill you unlock Pirate.
Pirate - One of the best for points.
Mm it was good except for a glitch I ran into that would move blocks beyond their physical limitations and end up smashing all the blocks together into one super block.
Pretty easy on normal, I'd recommend hard or higher.
For those wondering, you often have to clear out blocks multiple times if the rating is too high, you have to clear out the evil graveyard and the town hall quite a few times before they'll be reclaimable.
Also there are four ways to win;1. Taking over the town hall and drafting a constitution. 2. Taking over the evil graveyard and destroying the portal. 3. By researching every field and creating the zombism cure and 4. Taking over every block.
Acid is slowed signifigantly by an electrifed material, it very, very slowly eats through it though.
Also why is the virus impervious to Lava? And another problem, if I create a fire it can apparentaly heat the air to such a degree that C4 (Usually detonated by an electric charge) will detonate.
Also what is the point of explosives if they do not even destroy anything? All it does as far as I can tell is heat the air.
I'm kind of sick of seeing people complain that this doesn't have a tutorial or isn't easy.. This is a level pack, not a sequel.
LEVEL PACK..not SEQUEL...
 "Upgrade Complete 2"){kind=icon}
 "GunBlood"){kind=icon}
 "Orbital Onslaught"){kind=icon}
 "Roadkill Revenge"){kind=icon}
 "Endless Migration"){kind=icon}
 "The Final Death Wish"){kind=icon}
 "Ragdoll Laser Dodge 2"){kind=icon}
 "Interlocked"){kind=icon}
 "Rebuild"){kind=icon}
 "The Sandbox"){kind=icon}
 "Aurora"){kind=icon}
 "Farm of Souls"){kind=icon}
 "Liquid Measure 2 Dark Fluid Level Pack"){kind=icon}
 "Arkandian Crusade"){kind=icon}
 "Inferno 2: Meltdown"){kind=icon}