This is one of the very very few games I will ever add to my favorites. I love how it changes every day to a new level. This means a new challenge every day.
Here's an idea. After you die for the first time and you wake up from your dream, you're in pajamas. and if you click continue then you get out of bed, still in your pajamas and walk out the door to be attacked by hidden zombies. Then when it goes to the weapon select section you can change from suit to pajamas. I mean, who doesn't want to be running from zombies, shooting electrical currents, using nukes, and shooting rockets all in their pajamas?
To all those saying getting all 108 stars is impossible. I get every achievement (including all 108 stars) the second I beat the final level. So don't be saying it's impossible because I, and many others, have done it.