Heretic Easter Eggs

When the wizards (floating guys who shoot three purple fireballs) say things, they are saying backwards messages. These messages are:
1) "Destroy our heaven?!"
2) "I've got no attorney."

1. Type "quicken" for god mode
2. Type "rambo" for all weapons
3. Type "gimme" for artifacts
4. Type "ravskel" for all keys
5. Type "ravmap" for all map
6. Type "kitty" to walk through walls
7. Type "ponce" for full health
8. Type "massacre"... more

1 - Start a new game on any episode

2 - Type "engage61", "engage62" or "engage63"
to play the 3 super secret levels. I think they have no exit.

3 - Enjoy...