Most of the environment can be destroyed by weapons fire and some traps or defenses can be manipulated for use against the enemy. The game featured a previously unprecedented level of setting interaction. In No Remorse, the Silencer could carry no more than five firearms at once. Setting off an alarm will bring down significant military presence and the player is encouraged to avoid triggering them or to deactivate them as soon as possible.

All locations have alarm systems which can be triggered by actions such as walking into view of security cameras, weapons fire, or destroying a secured door. Settings vary from factories to military bases to offices to space stations, and contain a variety of enemy soldiers and servomechs, traps, puzzles and non-combatants (who can be killed with no penalty and their bodies can be looted for credits which are used to purchase better weapons). The Crusader is divided into missions, each with their own locations and objectives. Critically well-received, No Remorse was followed by the PC-only sequel Crusader: No Regret in 1996. Set in a dystopian world of 22nd century, the games center on an elite supersoldier that defects from the tyrannical world government, the World Economic Consortium (WEC), and joins the Resistance rebels. It was first released in 1995 the PC DOS, with the Sony PlayStation and Sega Saturn ports following in 1997. Crusader: No Remorse is an action game developed by Origin Systems and published by Electronic Arts.

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