- More xen monsters exist between combat encounters, dead or alive.
- A fourth wave has been added to the final fight.
- New geomerty has been added to the final areas as well as a health station.
- Music now plays during the apartments section as originally intended.
- The shotgun and SMG have been pushed back further into the map to enhance pacing.
- Resin is now more commonly observed in a stack of 5, theroetically reducing the annoyance of rummaging for resin to a fifth of what it was previously.
- Health pens are far less common, with health stations therefore being more encouraged.
- Grenades are far less frequent.
- A manhack encounter has been added.
- Ammo is slightly less common in high amounts, having being spread out more equally in smaller quantities.
- Some clutter has been reduced in earlier sections.
- New railings during the open area following the sewerage portion.
- The geometry of a room during the first combine fight has been adjusted.
- More clutter has been added to the final areas of the map following the blue key card.
- Adjustments to a prop in the apartments section allow for a headcrab to more easily move.
- The table following the red key card room has been adjusted so the player can more easily mantle from it.
- And everything else I forgot!

- Two combine soldiers have been added to the final fight room (prior to the waves spawned).
- Zombies and headcrabs have been added to the apartment section.
- Ambient music has been added between fight sequences.
- Adjusted lightining to objects and probes.
- Added 'ajar angles' to doors (they will appear slightly open sometimes rather than always closed).
- Added a larger variety to doors.
- Added more suitable doors during the apartment section.
- Added physics to objects accidentally static.
- Fixed a visual glitch concerning elevator doors.
- Adjusted certain multi-tool puzzles.
- The bodies in the aparment section no longer clip through the ceilings of the rooms below them.
- Some props have be repositioned.
- Adjusted the aesthetic of the vertical section following the sewerage portion (new rails).
- Starting ammo for the SMG and Shotgun have been set to 0.
- Repositioned an autosave prior to the final fight.
- And everything else I forgot.

Created Backtrack.