Here are few advices. I played as pacifist so it's the pacifist's way.
1. Never skip saving as far as the game has a lot of bugs.
2. "Freeze time" and "?????" are not very useful so don't waste your money buying it.
3. I used only "Euthanasia" and "Slave cage". Upgrade Euthanasia to max. And you'll need mana batteries and power-plant.
4. In the higher levels do not kill knights and supermen too fast - they won't leave anyway, but another units will appear not so often. Keep knights and supermen in the far corner while new units appear and kill new units fast with Euthanasia (3rd level). When current house will be empty kill knights and supermens. I killed them with slave cage, but knights shuold be red when you use a cage to kill them.
5. Do not open new house before you kill all units from the previous one.
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P.S. Pardon my English :)
How get Bullseye medal? "Kill a boss with a single strike". I used different shoulder weapons and killed 1st level boss with a single strike, but it doesn't work. Does anybody know how to get this medal?
KEEP THIS COMMENT ALIVE! HOW TO SAVE YOUR PROGRESS: You have to find file "learntofly.sol". I've got it in "Documents and Settings\Username\Application Data\Macromedia\Flash Player\#SharedObjects\chat.kongregate.com\gamez\0004\5630\live\Learn_to_fly_Final_3.52k.swf\". These numbers in the path can be different so use your Search. When you perform your fly successfully this file will be updated. Copy the updated file in some other place. If you fail next day this file will be updated again. Replace it with your old copy. Then refresh the page with the game and start playing again - you will begin with previous day.
KEEP THIS COMMENT ALIVE!
HOW TO SAVE YOUR PROGRESS:
You have to find file "learntofly.sol". I've got it in "Documents and Settings\Username\Application Data\Macromedia\Flash Player\#SharedObjects\chat.kongregate.com\gamez\0004\5630\live\Learn_to_fly_Final_3.52k.swf\". These numbers in the path can be different so use your Search. When you perform your fly successfully this file will be updated. Copy the updated file in some other place. If you fail next day this file will be updated again. Replace it with your old copy. Then refresh the page with the game and start playing again - you will begin with previous day.
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HOW TO GET THE 4,000 AND 6,000:
Get eveything. Then get your resistance to exactly 3% or at least pretty close. Then use your rocket to get up to 200 mph. Once the speed goes down to 175 mph, boost it back up to 200. Keep doing that until you are out of fuel. Then when you are out or rocket fuel, go down then up. Don't let your resistance go up to more than 6%. When you go back up you should have your resistance back at 3%. If you have done this correctly, you should have gotten far. This does work.
KEEP THIS COMMENT ALIVE!
HOW TO SAVE YOUR PROGRESS:
You have to find file "learntofly.sol". I've got it in "Documents and Settings\Username\Application Data\Macromedia\Flash Player\#SharedObjects\chat.kongregate.com\gamez\0004\5630\live\Learn_to_fly_Final_3.52k.swf\". These numbers in the path can be different so use your Search. When you perform your fly successfully this file will be updated. Copy the updated file in some other place. If you fail next day this file will be updated again. Replace it with your old copy. Then refresh the page with the game and start playing again - you will begin with previous day.