When the original Deus Ex title appeared in 2000, there really wasn’t anything quite like it. The clarity of vision of the development team offered an unprecedented amount of choice in the game. Warren Spector’s “Play Style Matters” motto was woven throughout the game.
Human Revolution, on the other hand, feels almost confused by comparison. Achievements and “gamification” seem to conflict the choice the first Deus Ex is so well known for.