Gauntlet

For this one its alot easier to do this by your self rather then with a partner as there is the same amount no matter what you do but doing this by yourself you can run in any direction but with a partner you guys cant go further then the screen allows. You can get up to 20 cases if your fast and dont get lost, when your getting close to the 11th case and you see the door try to stay close to the door so you have time to run to the door.

Any Questions, Just send me a message
GT: xGodDogx

To get to a treasure level might be hard for some people (referring to those who just buy the game to get achievements and do not want to invest any time in learning / practicing the game). This solution is for them:

Go in to single player, and choose the Elf (fastest character). Press the Y button to gain some life (you can hit up to a maximum of 99,999 HEALTH). Then just wait out the levels or play through them (you have lots of life, you cannot die, and even if you get low on life, you can just hit the Y button some more). After the 10th level you will hit the treasure level, so just practice and learn the treasure level (try to find the best path for you that nets you the most treasures, in the fastest way possible, and lets you exit).

The best method for me was the above.

I got the achievement on the 1st treasure level (after 10th level). I worked my way from where I started to the bottom right. The exit is near the right side of the bottom (you have to go to the most bottom, and head towards the right). Took me one try, but that was because I had just finished watching my friend the achievement in co-op, and I knew where the exit was.