Why do games from this series keep ending up as BOTD? They're so incredibly tedious, and they're all identical - same art, same concept, same mechanics, the only difference is the type of restaurant you work in.
PRO TIPS: Maxing out HP Regeneration makes you invulnerable to hunger, giving you unlimited time to complete a level and allowing you to heal as much as you want between attacks. This also saves you from spending points on the Hunger upgrade. And if you max out HP Regen AND the HP upgrade, you'll be pretty damn hard to kill.
HOW TO GET IMPOSSIBLE BADGE: 1) Start with Virus AND in Greenland, get sneezing if you don't already have it (if you have to do that, sell off the other symptom ASAP). 2) Get 1/1/1/0 resistances. 3) The moment you spread to a second country, sell sneezing (you may have to do this before finishing Step 2). 4) Wait until you have infected all countries (this may require restarting several times - restart if Madagascar shuts down before you infect it). 5) The second you have infected all countries buy waterborne, moisture II and drugs I-IV (or buy drugs I-IV sooner if they start the vaccine early). 6) Wait until all/most countries are red (day 40 at latest, but sooner is better), then buy most Tier I-III symptoms, including at least one deadly one (e.g. pulmonary edema). Keep buying symptoms until you win. Oh, and play on the fastest speed, there's no point playing slowly.
If the developer had spent more time perfecting the controls instead of mocking the player's frustration with those little jokes at the end of each level, this game might have been decent...
HOW TO BEAT LEVEL 25: keep the ball going up and down only, never sideways, so you only have to use the top and bottom rectangles. it's still a stupid level, though. + if this helps
 "DuckLife3: Evolution"){kind=icon}
 "Robot Wants Fishy"){kind=icon}
 "Cube Escape: The Cave"){kind=icon}
 "Papa's Burgeria"){kind=icon}
 "no-one has to die."){kind=icon}
 "Into Space 2"){kind=icon}
 "Reach the core"){kind=icon}
 "Amberial: Nebulosa Realms"){kind=icon}
 "Moby Dick 2"){kind=icon}
 "Pandemic 2"){kind=icon}
 "Utopian Mining"){kind=icon}
 "Meat Boy"){kind=icon}
 "Transmission"){kind=icon}
 "Time Kufc"){kind=icon}
 "Cube Escape: Birthday"){kind=icon}
 "Road of the Dead"){kind=icon}
 "me and the key"){kind=icon}
 "SHIFT 3"){kind=icon}