DIFFICULTY LEVELS
In the original game only bullet damage was influenced by difficulty level. Difficulty levels in GMDX however influence a wide variety of encounters related to stealth, combat & exploration. Difficulty levels have been expanded upon considerably to provide a suitable experience relative to the player's skill level.
Just some examples of influenced behaviours are as follows:
STEALTH
-NPC vision range.
-NPC vision sensitivity.
-NPC cooldown times.
-NPC hearing sensitivity.
-NPC reaction times.
-NPC stealth-based intelligence, such as seeking behaviour.
-Camera vision range.
-Weapon noise levels.
COMBAT
-NPC accuracy.
-NPC speed.
-NPC grenade blast radius.
-Turret attack range
-Player accuracy (on the lowest difficulty standing accuracy bonus is accelerated).
-Ammo availability.
EXPLORATION
-Environmental hazard lethality.
-Proximity mine detonation time & radius.
-Medbots & repairbots offer limited uses on higher difficulty modes.
-Stamina drain rate.
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HARDCORE MODE
A new difficulty mode that emphasises choice & consequence, challenge, balance & strategic tension.
Not for those averse to a challenge.
You must first complete GMDX on any difficulty level to unlock hardcore mode.
How it works:
Saving:
-Disables manual saving, enables save points and map transition autosave.
-Cycles through 20 save slots (# of slots can be increased or decreased via options menu).
Additional rules:
-Disables weapon auto reloading.
-Disables console commands/cheats.
-All aspects of the User Interface must be navigated in real-time.
-Ammo is slightly more scarce in hardcore mode.
-On hardcore mode doors and their locks are more resilient, as are hackable devices.
-AI is more intelligent in hardcore mode and much more.