This game absolutely changed my life. Before, I was a pale, skinny nerd without any social skills and 0 game with girls. Now, I'm a certified top-level Gigachad with millions of women begging for my attention. Thank you for changing my life, WebCypher.
I managed to get the impossible badge within 5-6 hours after getting all 120 stars with a 2.3k score. What I did was I looked at the all-time leaderboard, saw the bottom scores of every level and tried to reach them (or at least smash my previous records). If I noticed I raged too much I would skip to the next level, repeating the same method. Keep practicing and you'll do wonders.
For the easy badge, you can just go to the same screen you previously were because the zombies respawn. Make sure you get a weapon though (and ammo for guns)
I thought the rabbit was really easy since I beat him on my 2nd try with barely any ability upgrades. What I did was I kept circling him clockwise to avoid the bursts while re-aligning myself in front of him to fire as much as I could then circled him again.
That moment when you use your bomb for 1 enemy who's about to leave the screen then get flooded with the next wave of enemies and heaps leave the screen
 "Konkr.io"){kind=icon}
 "Douchebag Workout 2"){kind=icon}
 "Zak"){kind=icon}
 "Sword and Spoon"){kind=icon}
 "Beam Ball"){kind=icon}
 "Rogue Soul 2"){kind=icon}
 "Zombies Took My Daughter!"){kind=icon}
 "Bear in Super Action Adventure"){kind=icon}
 "Notebook Wars 3: Unleashed"){kind=icon}
 "Mighty Knight"){kind=icon}
 "Papa Louie: When Pizzas Attack! - Kongregate Version"){kind=icon}
 "Effing Worms 2"){kind=icon}
 "Jacksmith"){kind=icon}
 "Bullet Heaven"){kind=icon}
 "Sentry Knight"){kind=icon}
 "Sieger"){kind=icon}
 "Sentry Knight Conquest"){kind=icon}
 "Achievement Unlocked"){kind=icon}
 "Genghis Khan"){kind=icon}
 "Murloc RPG: Stranglethorn Fever"){kind=icon}