- Achievements
Do the following things to obtain the corresponding Gamerscore points:

10 Points
One of Many	Exit any floor at any difficulty.
You Are Death Incarnate	Finish one floor on 'I Am Death Incarnate'.
Hey, That Wall Moves!	Find one secret.
15 Points
A Dark Secret Revealed	Finish episode four on Don't Hurt Me or harder.
Confronted	Finish episode six on Don't Hurt Me or harder.
One Fewer Fuhrer	Finish episode three on Don't Hurt Me or harder.
Escaped from Wolfenstein	Finish episode one on Don't Hurt Me or harder.
Sentenced the Madman	Finish episode five on Don't Hurt Me or harder.
Operation	Eisenfaust Finish
20 Points
None Left Standing	Get 100% kills on any floor on Don't Hurt Me or harder.
Clean out the Castle	Get 100% of the treasure in any floor.
40 Points
Blazkowicz-ed!	Finish all six episodes on Bring 'Em On! or harder.

- Secret Level 10
Go to the end of the first level. Instead of going through the exit, turn right, and open a secret door in the corner of the wall. Then, turn 90 degrees to your right to open another secret passage. At the end, you will find the elevator to Level 10.