Cheese method
See here for how to use the in-game browser console.
Press F12 to open the console. First run this code: var r = cr_getC2Runtime();
Start playing, and when you begin each level, run the following command to win instantly. You don't have to wait for the timer before running it. After a few seconds, the final image will come up; click it then click next level.
Don't forget to get the misc achievements for clicking Play, Levels, Gallery (trophy icon), and lastly Exit.
The broken achievements can't be fixed within UAHR due to the in-game triggers not matching the API names.
