A mod that changes the game's mechanics to work bit similar to PAYDAY 3's mechanics.

MATCHMAKING-LOCKED, ACHIEVEMENTS DISABLED, USES DIFFERENT SAVESLOT
This means that you should backup your savefiles (altrough the mod saves under local_hdd, while vanilla saves under steam_cloud but you should still backup your saves)
also you can only play multiplayer with others who have the mod but i recommend playing only singleplayer.

Features:

• Cops will now use automatic rifles (except for ene_cop_3, whose default weapon is now r870 and stealth)
• Casing mode is overhauled a bit, you can now crouch and interact with mission objects and lockpick doors
• Added Search Mode for Guards, instead of raising the alarm instantly they will go into search mode and begin searching the area. There exceptions to this, as mission-triggers and some calls will still raise the alarm. Not answering a pager for example will raise the alert level.
  There 4 alert levels: Calm, Alerted, Highly Alerted and Lockdown.
  Calm is the initial phase.
  Alerted is when they will still walk casually but patrol every corner.
  Highly Alerted is when they will run when searching for you.
  Lockdown is similar to High Alert but it's the final phase, once you fuck up again the alarm goes off.
  Guards in search mode will go towards your (the host) position during High Alert and Lockdown phases, but will search around their current location.
• Guards will automatically cuff themselves once the first assault starts, cleaner costs will also be applied when killing them and unlike to regular enemies they will always surrender when you shout at them should they be freed. Before surrendering however, they will use their surrender preset set by their CharacterTweakData.
• Removed Jokers (reasons is because of guards automatically cuffing themselves)
• Removed Swan Song
• Marshall's will only spawn in select-heists, but some of them decrease their initial spawn delay or even remove them entirely.
• Armor will no longer refill, but will also prevent damage while you have armor.
• Assault time is increased to 75s, while Fade duration has been increased from 5s to 15s
• Lowered spawn pool (it's just a copy of console spawn pool, so feel free to adjust or get some other groupaitweakdata mods that change this)
• Team AI will sometimes drop ammo/medic bags during loud in singleplayer mode.
• In some heists, security camera detection rate is increased.
• Enemies in loud will use voice filters.
• All enemies can now be marked in stealth.
• Adjusted suppressions presets for enemies.
• Adjusted surrender presets for enemies.
• Enemies now requires line-of-sight to detect anything.
• Pager count is determined by difficulty, 4 on lower difficulties, 3 on medium and 2 on hardest difficulties.
• Guards will have a 0.05 chance of spawning without pager.
• Search Mode will increase detection-rate.
• Removed health/speed scaling.

Known Bugs:

• Sometimes game will crash, page load errors, single steps. No idea why, prob diesel limits reached.
• No worth in buying certain skills, idk how to disable them so fuck it i guess.
• AI during searches might bug out, this is mainly due to how PD2 navigation is handled.
• The mod isn't perfect, and such there might be certain oddities and imbalances. I am still working on this mod!

Search Mode Exceptions:

Gunshot alerts
Camera alerts
Too many pagers
Pager not answered
Explosions

Compatibility:
Because this is somewhat an overhaul aswell, other overhauls are not compatible so create a new mods folder and rename your old one if you want to play with this.

SA doesn't work, the mod will give/take pagers with random chance

TLDR; disable all your mods except SBLT (and Beardlib if you need that one) and THEN install this.
Put others one-by-one and see if they would work.

Mod priority is 1000, so you may single-file mods that change 1 thing like groupaitweakdata and those should work.
mod_overrides should work, as those are purely client-sided.