This is a very high level list of changes. There has been uncountable numbers of optimizations, changes, tweaks, and additions to Beta 4 since Beta 3.1.4. This list is by no means complete and captures the major changes that will be seen by the average player. <br/>

*Added: Replaced LUA with Python for Gameplay Scenarios *Added: Achievement progress report. Connecting clients transmit their achievement status to the server and the server compiles a string of achievement ids the client has achieved that is sent to server plugins via the event message “achievement_progressreport” *Added: CVar ge_armorrespawntime seconds *Added: CVar ge_itemrespawntime seconds *Added: CVar ge_dynamicarmorrespawn 0 and ge_dynamicarmorrespawn_scale float *Added: CVar ge_dynamicweaponrespawn 0 and ge_dynamicweaponrespawn_scale float *Added: CCommand ge_gameplayreload (opt) to reload the current gameplay from disk rather then cache (useful for testing python gameplay) *Changed: Reimplemented the radar to send player positions separately with precision of 10 units to reduce net traffic *Fixed: Several minor memory leaks *Removed: CVar ge_dynamicrespawn and ge_dynamicrespawn_scale <br/>

*Added: Rolling Explosions *Added: Bullet Penetration (Applies to AR33, CMag, RCP90, Moonraker, Automatic Shotgun, Silver PP7, and Bishop Sniper Rifle) *Added: Player spawning is done in an intelligent manner with players spawning in the “least-populated” spawn point to prevent spawning in the middle of a firefight *Changed: Re-added duck jumping back in with substantial improvements over Valve's method (NOTE: You don't unduck until you land) *Changed: Slowed down normal walking speed a little to correspond with GE64 *Changed: Modified Invulnerability. If another player attacks an invulnerable player for greater damage then the original attack, the difference is applied and the victim receives additional invulnerability. *Changed: Reduced delay of Cougar Magnum firing *Changed: Modified some weapon damages and accuracy settings *Changed: Bigger emphasis on teamplay *Fixed: Reordered several events that occur pre and post rounds to properly display scores *Fixed: When players spawn, if all spawn points are occupied the left over players will be kept in observer mode until a spawn point is made available preventing “telefragging” <br/>

*Added: Capture The Key *Added: Living Daylights *Added: Live And Let Die *Added: Gun Game *Changed: All other scenarios were adapted to python with no changes to their basic gameplay *Fixed: YOLT round end conditions <br/>

*Added: Level Music Player *Added: Gameplay Help Popup Menu *Added: Weapon Set Popup Menu (with images!) *Added: Fade to black and “Press Start” screen on death *Added: Fade in from black and viewpunch on respawn (as in N64) *Added: Breath Effect (subtle movement while standing still) *Added: Ability to disable heat wave and dynamic light of rolling explosions *Added: HTML window is back and stylized for plugins to use. Standard HL2 command syntax applies. *Added: Goldeneye-style third-person character animations. *Added: Many particle effects to maps, weapons, and gameplays. *Added: Impact effect for projectile weapons that hit concrete, wood, or tile *Changed: Teamplay HUD score display *Changed: Teamplay scoreboard display *Changed: When Fast Weapon Switch is enabled it will show the name of the weapon in the lower right that you currently hold (for a couple seconds) *Changed: View bob while running *Changed: Allow picking of separate models per each character (in addition to skins) *Fixed: Sticking in the wall while walking, also known as viewmodel jitter *Fixed: Character select lighting of player model *Fixed: Character select scrolling *Fixed: After action report not displaying proper teamplay/gameplay information if it changed between rounds *Removed: Typing !weapon and !help into chat was removed in lieu of the gameplay help popup <br/>

*Added: Goldenzen's Pieces (Aztec, Casino, SOP, Always Better, Bunker, Library, Streets, Facility Alternate, Cradle Alternate) *Added: Caverns music by Basstronix and Sole Signal *Added: Shaken and Stirred by Sole Signal *Added: Aztec music by Basstronix *Added: New menu music by Goldenzen and Basstronix *Added: Rolling explosion sound effect *Added: New weapon sounds (Rocket Launcher, Grenade Launcher, Moonraker) *Added: Gameplay sounds (LALD, LD, Capture The Key) *Changed: Body Armor pickup sound *Changed: Weapon sounds (ZMG, Klobb, CMag, PP7, Moonraker, DD44, D5K, Phantom, Shotguns) <br/>

*Added: ge_aztec *Added: ge_caverns *Added: ge_facility_backzone *Added: ge_silo *Added: ge_basement *Added: ge_facility_classic

*Changed: ge_archives *Changed: ge_facility *Changed: ge_runway *Changed: ge_cradle <br/>

*Added: Female Scientist *Added: Alec Trevelyan *Added: Custom third person animations for all weapons (except grenade, throwing knifes, and cougar magnum because the HL2MP anims fit just fine) <br/>