Posted this in a different thread, but it may be useful to anyone who needs quick access to the information and hadn't looked in the other thread.
Deserving of its own post I hope.
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You recieve a DP bonus that is adjusted in accordance with the following criteria;
1. The weapons basic value. 2. The way the Weapon was obtained (see below). CONDITION-------------------------------------------------------MULTIPLIER
Weapons placed on maps.
----------------------------------------------1
Weapons found during hold-ups and body searches.
----------------..-----1
weapons obtained by disarming soldiers with CQC.
-----------------...-----1
Weapons dropped by soldiers defeated by anyone other than Snake.
------0.3
Weapons of enemies defeated in a cutscene.
-----------------------------1
Weapons dropped by soldiers put to sleep or stunned by Snake.
-----.-----0.2
Weapons dropped by soldiers killed by Snake.
------------------------..---0.1
3. The difficulty level you are playing on (see below). 4. The current Act (see below). --------LIQUID EASY ----- NAKED NORMAL ----- SOLID NORMAL ----- BIG BOSS HARD ------ THE BOSS EXTREME ACT 1-------1
--------------------1
--------------------1
---------------------0.8
-----------------------0.5
ACT 2-------1
--------------------1
--------------------1
---------------------0.8
-----------------------0.5
ACT 3------1.2
---------..--------1.2
---------.--------1.2
--------------------0.95
------------------..---0.6
ACT 4------1.5
---------..--------1.5
---------.--------1.5
-------------..------1.2
-----------------------0.75
ACT 5-------2
--------------------2
--------------------2
------------.--.--.---1.6
------------------------1
The calculation, with 1 representing 100% of the basic weapon value, works in the following way:
Basic sale value x condition multiplier x battlefield multiplier = total
For example, if you obtain a P90 by tranquilizing a Haven Trooper in Advent Palace on Big Boss Hard difficulty level, the maths looks like this:
1,500 DP
x 0.2 (soldier stunned)
x 0.8 (Big Boss Hard, Act 1)
= 240DP