I make some terrible Payday 2 mods

Q: What are challenge decks ?
A: Challenge decks lock out the traditional leveling up and allocating points to unlock certain gear and abilities, and then places those item unlocks into the perk deck system. In order to use certain weapons or skills, you need to pick a challenge deck.

Q: What do you mean by locking out gear and abilities ?
A: For example, you normally need to reach level 36 to unlock the Deagle, and you need to get the sentry gun skill in the tech tree to unlock the sentry, which also unlocks the trip mines.
With Challenge decks, you need to select a deck that contains the ability to use the deagle. While another deck could have the ability to use sentries, but will totally avoid unlocking tripmines for you.
I can do this for any primary/secondary, any melee, any armor, any throwable, any deployable.

Q: But what about DLC weapons ?
A: This WILL NOT unlock DLC for you, but there will be decks that cannot allow you to use your precious DLC weapons. i.e. If you do not own the Ninja Pack, this will not allow you to use those items, if you pick a deck that has them.

Q: What about achievements ?
A: YOU WILL BE LOCKED OUT OF ACHIEVEMENTS.
To avoid issues with carrying people for something like Tabula Rasa, certain perk decks will lock you out of using a specific piece of gear. In the case of Rasa, you won't have the Golden AK, meaning you will not have the required weapon to allow another user to get that achievement.

There is a single exception to that golden AK rule.

Q: Any pertinant things I should know ?
A: Yes, there are certain things that are available as skills, that you may not be aware of, or certain things may be separate, but associated.
For example, by default, you have a skill that gives you 2 cable ties, which means I could make a deck that starts you out with 0 cable ties.
Another example, there are two skills for marking, one allows you to mark enemies and another allows you to mark camera, without them you will be unable to mark either entities.
Similarly to marking, ECMs can have their ability to block cameras separated from them, making them to be useless for stealth, and forcing them to take their more aggressive role, with their ECM feedback skills.

Q: Do you have any examples of decks ?
A: Yes I do, but only small parts of them

Alesso:
2x ECMS
ECM Feedback
30 seconds of Feedback
Recharge 4 minutes
Cannot block pagers or cameras

Wolverine:
Swansong
9 lives aced (Chance increased to 100%)
Melee kills give you health
Only punching based melee weapons
Kills cause panic

Iron Giant:
ICTV only
Bulletproof
1 Ammobag
3 FAKs
Carry FAK and Ammo (Like the sentry/mine skill)

There will also be "Tabula Rasa" sets, which will be the default skills, and have only the appropriate gear available to you. These will still not unlock the achievements for you, but will allow you to fairly help someone unlock that achievement.

If you have ideas for challenge decks, please post on this forum or use the following form to fill it out https://docs.google.com/forms/d/17V_hMNGd3CED9RWR6A5LRV3dFVOgG7bmPehrQEa1Lvc/viewform?c=0&w=1