"Total destruction of karma," ie: results of actions, is the obvious result of the realization that the actions were illusory from the beginning.
You are mistaking here karma with action, whereas I mean it to be tendency.
When one operates out of the ego due to cravings and aversions, one creates psychological impressions that force one to perpetuate the actions performed repeatedly. These psychological impressions are called vasanas and the actions they prompt is called karma.
As a minor example, if one takes coffee or alcohol at 3 p.m for fifteen days, one would on the sixteenth day, take coffee mechanically and without any prior thinking. Habits, good or bad, are created by such actions repeated, creating corresponding good or bad impressions in the unconscious.
Addictions are but very strong impressions in the unconscious, that force one to repeat an action performed for the sake of pleasure or to avoid pain, even if it may be harmful in the long run.
The problem with the vasanas or psychological impressions is that they force the mind to be in the past or future incessantly through desire and the thinking/emoting process it generates, rather than in the natural state of present moment awareness. As Sri Sri Ravi Shankar stated on desire,
" Desire means the present is not sufficient; it is not okay the way it is now. Desire means projection to the next moment. Desire means being unaware of the Infinity. Desire simply means you don't know yourself."
This unnatural state of mind obscures self-knowledge and its natural blissful state, and creates misery in return, which in turn further intensifies pleasure seeking thereby perpetuating the karmic process.
When there is no joy in you, you become a pleasure seeker. - Jaggi Vasudev
The irony is that the natural state of present moment awareness is the authentic source of peace and bliss, which are its characteristics, but we keep ignoring it due to desire for pleasures or avoidance of pain, based on past memories.
Enlightenment on the other hand, means being fully conscious, aware. Ordinarily, as stated earlier, we are not conscious and not aware. We are doing things either out of habit or out of biological instinct in a robotic manner. Being conscious of all our actions enables us to transcend the repetitive karmic process and be alive rather than exist mechanically.