to lazyness_net:
This game was not a rushed game. It's supposed to be easy. The quality wasn't crappy and the music at the end was GENIUS. But, who cares. It's your opinion anyway.
here's the first step for the title trasher badge. look at the top right corner. you will see an angry face that says do not click. click on it. now go from there.
lvl 15:
put 2 portals next to each other on the ground. Use the portal that's farther from the blue wall and shoot that part of the floor right next to the zapping things. Wait until you can go through, and done. (you can also watch the video walkthrough on kongreguide if you need help).
to lilpuding1:
to do infinite loop, just shoot a portal on the ground, then shoot one on the ceiling right on top of it. go down, and there's your infinite loop.
tier 21 is almost IMPOSSIBLE. (at the end).
the big star traps you in, and two rollers from both sides kill you. you can't shoot fast enough, so you die. WTF!!!
if, like, 80 percent of the people who play this game are hackers, then it's impossible to get the full bird costume, since they just cheat the whole race.