Just change the difficulty setting
IRAI_0_0_39_ByTheDarkWraith\data\Scripts\AI\init
################################################## ###############
###################### Difficulty parameters ####################
# Note: difficulty is in range 0.0 - 1.0 with 0.0 being no difficulty (sensor doesn't exist)
# for non-merchants
VISUAL_DIFFICULTY_MIN = 0.85;
VISUAL_DIFFICULTY_MAX = 1.0;
HYDROPHONE_DIFFICULTY_MIN = 0.85;
HYDROPHONE_DIFFICULTY_MAX = 1.0;
RADAR_DIFFICULTY_MIN = 0.85;
RADAR_DIFFICULTY_MAX = 1.0;
SONAR_DIFFICULTY_MIN = 0.85;
SONAR_DIFFICULTY_MAX = 1.0;