Нужно сначало SWAT 4 v1.0 обновить до v1.1 скачав ее Тут
Вот теперь уже можно скачивать v1.2
1) Установка - советую создать новую папку например на рабочем столе и туда указать путь в установки мода
2) Копируешь файлы из новой папки и заменяешь их в SWAT4 v1.1 ( Папку Maps заменяешь Maps и т.к )
3) Сделай копию папки игры v1.0, чтоб мог играть по интернету
P.S Этот патч еще не доделан разработчиками т.к нет больше половины обещанного... 
Features:
- 80 primary/secondary weapons
- 10 kit items
- 2 breaching weapons
- 4 customized skins (2 SWAT and 2 Suspect)
- Ultra hi-res player skins
- Customizable body armor
- 12 new maps (5 coop/single player)
- Auto update service (Special thanks to Desrat)
- Custom game and dedicated server executables (Special thanks to Desrat)
- Custom dedicated server tools
- 32 player hosting support on multiplayer servers
- Multiplayer chat lobbies (Special thanks to AlienAbducter)
- Antics integrated anti-cheat system (Special thanks to Rapher)
- Mod support including a new editor and developer tools Standard Primary Weapons:
- Accuracy International .338 Super
- AK 47
- AK 74
- AKS 74U
- Barrett M82A1
- Benelli M3
- Benelli M3 Tactical
- Benelli M4 Super 90
- Colt CAR-15 9mm
- Colt M16A2
- Colt M4A1
- Colt SPR
- Dragunov SSV-58
- Enfield L85A1
- Enfield L86A1
- Famas F1
- FN FNC
- FN M249
- FN SCAR-H
- FN SCAR-L
- Franchi SPAS12
- Hk Fabram
- Hk 23E
- Hk 33A2
- Hk 52A3
- Hk G36
- Hk G36C
- Hk G3A3
- Hk MP10A2
- Hk MP5A2
- Hk MP5SDA2
- Hk MP5K-PDW
- Hk MP7-PDW
- Hk PSG-1
- Hk SL8
- Hk SL9
- Hk UMP 45
- Hk XM8
- IMI Galil
- IMI Tavor TAR-21
- IMI UZI
- Ingram MAC 10
- Izmash Bizon
- Mossberg 590
- Panchor Jackhammer
- Remington 870
- SIG 550
- SIG 552
- SIG 556
- Skorpion CZ 61
- Spectre M4
- Steyr AUG
- Steyr SSG
- Stoner SR-25
- ZM Weapons LR300
Standard Secondary Weapons:
- AMT Hardballer
- Beretta 92FS
- Browning HP M1935
- Casul Raging Bull
- Colt 1911
- Colt Anaconda
- Colt Python
- FN Five-Seven
- Glock 18
- Glock 20
- Glock 35
- Hk Mk23 SOCOM
- Hk USP 40
- Hk USP Match
- IMI Desert Eagle
- Kimber 45
- Serbu Super Shorty 12G
- Smith&Wesson M29 Satan
- SIG P220
- SIG P228
- SIG SAUER PRO
- Walther P38
- Walther P5
- Walther P99
- Walther PPK
Standard Breaching Weapons:
- Colt M79
- Hooligan
Standard Kit Items:
- Fragmentation Grenades
- Concussion Grenades
- Incendairy Grenades
- Smoke Grenades
- Riot Grenades
- C4 Explosives
- Light Sticks
- Flares
Maps:
- Black River Bridge (SP/MP)
- Fairview Sports Center (SP/MP)
- 12th Street Station (SP/MP)
- Temple of Ascension (SP/MP)
- Two-A-Day Shipping (SP/MP)
- Riverside Training Facility 2 (MP)
- Southeast Airlines (MP)
- The Sanctuary (MP)
- Fairview Police Training Complex (MP)
- Fosters Dam (MP)
- Mexican Arms Deal (MP)
- Casino Fantasia (MP)
Российская Федерация
