Navigation changes: There is a new kind of shrinker with a skull and crossbones. This indicates that it is hard or impossible to grow once shrinking. Also, it is possible to exit more dungeons from their entrance.
We increased mobility by having more two-way waypoints (instead of one-way waypoints) and less one way passageways. There are less "White Box Device" corridors (which removed the player's ammo).
Many of these are replaced by a new type of door (a Toll Door) which you pay to open and then it remains open forever.
To facilitate these changes which open up the world, there is now a new type of ammo box (in addition to the old type) that does not respawn when you pick it up.
Weapons and ammo: Improved baseline velocity stats of the rocket and nuke. Increased the amount of ammo placement, especially for the rocket, minigun, and nuke.
The intended difficulty (the purple cat) is now called "Normal". All harder difficulties require a password.
The difficulty that was before called "Normal" is now called "Gateway".
We remixed the sounds.
We added to the plot.