Cheese method
Click Play, change to Easy difficulty, then Play.
Open the console with F12 and enter the following:
var r = cr_getC2Runtime();
I couldn't get the secrets to pop through the console, so we'll detour for those while getting the other achievements. See guide linked below for locations.
Enter the following lines one at a time, stopping to find the secret boxes where noted. At the end you should have all achievements.
r.changelayout=r.layouts['scene_2_1'];
r.changelayout=r.layouts['scene_3_1'];
// Get the first secret box - follow pointer for first three regular boxes, then approximately south from the health box.
r.changelayout=r.layouts['scene_4_1'];
r.changelayout=r.layouts['scene_4_2'];
// Get the second secret box - get to the bottom by going south and east/west when blocked, then west.
r.changelayout=r.layouts['scene_5_1'];
r.changelayout=r.layouts['scene_5_2'];
// Get the third secret box - head northeast over land only.
r.changelayout=r.layouts['End'];
Secrets guide:
Loading Steam guide...
