I have compiled a list of all the anwers over on Newgrounds (also, thanks to all the users who helped finding those games!): haggard.newgrounds.com/news/post/828006
Sorry for the bad formatting. Hopefully the Unique Titles turn out better: Level 1
First Row: Ghosts n Goblins, ??, Rampage, Elevator Action, Spy vs Spy
Second Row: ??, Duck Hunt, Bomberman, Dig Dug, Captain America and the Avengers
Level 2
First Row: Karateka, ??, Popeye, Dr Mario, Adventures of Lolo
Second Row: Rygar, Maniac Mansion, Rush n Attack, Pinball, ??
Level 3
First Row: The Goonies, ??, Chip 'n Dale: Rescue Rangers, Ikari Warriors, Road Fighter
Second Row: Ice Climber, Antarctic Adventure, Binaryland, Journey to Silius, Scat
Level 4
First Row: ??, Astyanax, Paper Boy, Shadowgate, Mighty Final Fight
Second Row: Sky Destroyer, Snow Bros, ??, ??, Circus Charlie
Level 5
First Row: Mickey Mouse, Tiny Toon Adventures, ??, 1942, Balloon Fight
Second Row: Donkey Kong, Hogans Alley, ??, Life Force, ??
Common Title
1
Gradius, Batman, Super Mario Bros., Contra, Excitebike
Metroid, Castlevania, The Legend of Zelda, Mega Man, Punch Out
2
Bionic Commando, Duck Tales, Final Fantasy, R.C. Pro-Am, Cobra Triangle
Urban Champion, River City Ransom, Ninja Gaiden, Double Dragon, Kid Icarus
3
Blaster Master, Bubble Bobble, Werewolf, Blades of Steel, Metal Gear
Kirby's Adventure, Pro Wrestling, Clu Clu Land, Adventure Island, Mappy
4
City Connection, Pac Man, Rad Racer, Mach Rider, Kung Fu
Micro Machines, Bad Dudes, Baseball, Faxanadu, Jackal
5
Cabal, Arkanoid, Tennis, Gumshoe, Robocop
Galaga, Battletoads, Tetris, Klax, Crystalis
There's no way that this game has anything to do with "randomness". Or why else are there three difficulty levels? The AI doesn't cheat as much on the low levels as it does on a higher difficulty. That's all.
The game really needs a 3rd dimension... I shot one zombie in the head with the hunting rifle. The bullet continued to fly on and hit another zombie in the LEG! Also, aming is terrible without the 3rd dimension. I aim on the head and the bullet ends up flying somwhere else, but not there where I aimed.
The chainsaw is a cool weapon, but it seems as if it is a bit bugged. Sometimes the zombies stand right in front of me, but they don't get hit by the saw.
Here's how I beat it (I started in Peru):
*Sell any symptoms you have immediately
*Buy all the transmissions as soon as possible
*Buy the first tier (and only the first tier) of Cold, Heat and Moisture
*Buy ALL the Drug resistances
*Collect evolution points while the world becomes infected
*Advance to tier IV on the symptom tree and sell any bonus symptoms along the way
*Buy the nastiest tier IV symptoms once you have enough evolution points
* Have A LOT of patience.
Dude! You just completed the Bubble achievement in Bubble Tanks and won the Bubble badge and 15 points!
All I did was randomly moving from bubble to bubble until I decided to move straight downwards the whole time. After some time I saw a very big enemy tank... but at that time he really was no match for me.
Now this game is worthless for me as it doesn't offer anything besides the card and the badge I could win here. There's really no point to the game any more, as there is no score or something like that...