Sly 2:Difficulty

Difficulty, also called suck, is the mechanic by which the game because easier or harder depending on your gameplay. If you repeatedly die or fail a job, certain aspects of the game become easier to compensate.

Suck score
In, uSuck is set on a per-mission basis. It ranges from 0.0f to 1.0f and increases each time you die or fail a job.

The uSuck value is used in the level scripts to make certain aspects of the game easier. For instance, in Moonlight Rendezvous, Neyla will start off only waiting 5 seconds for you to catch up with her. As your suck increases, the time she waits also increases to a maximum of 20 seconds. This is done by multiplying the suck value by 15.0f and adding it to the base value of 5.0f to get the number of seconds Neyla waits before you fail the job.