1: Puzzles are much easier to solve and always have several ways how to solve them.

3: As above, but SHODAN won’t wait forever for you to defeat her.

All access cards are required and security level needs lowering to access some areas. You still need to hack some doors and solve other riddles to beat the game. No access cards are needed and security level doesn’t affect anything. Security level doesn’t prevent doors from opening, all doors are unlocked.

0: No e-mails, audio logs and that kind of in-game messages.

Also security cameras aren’t shown on the map.

3: More enemies and more reinforcements.

Security cameras are shown on the map with red dots. Enemies start chasing you as soon as they learn about your presence. Default enemies, default damage, default reinforcements. They attack you on sight but they never chase you.

They even die with a single hit no matter which weapon you use. 0: There are a few enemies and they never attack you.Stumble across an audio log describing the precise solution to stopping SHODAN’s plan and learn you’ve already completed most of it by interacting with every object you’ve seen across the station - unless you flipped the wrong switch in the wrong order, in which case congratulations, Earth is doomed.

Realize you require an item from a different level and repeat all the previous steps there.Look around for giant screens with numbers, and for god’s sake, write them down - you’re going to need them.Loosen SHODAN’s hold on the level by shooting security cameras, flipping switches, activating resurrection stations, solving high-tech Pipe Dream puzzles, and jacking into cyberspace arenas that work like an even trippier variant of Descent.

Wander around whichever level of Citadel Station you happen to be on, fighting an ever-proliferating crew of mutants and cyborgs, plus some robots that will make you rue the invention of the printed circuit board while watching the game’s map fill in and taking note of its many locked doors.Hear about some flamboyantly omnicidal plan of SHODAN’s, often from SHODAN herself, who loves taunting you as much as she hates humans.

System shock 2 difficulty scaling