"However, Revan was prepared. Instead of charging forward, he opened himself up to the Force, letting both the light and the dark side flow through him like twin rushing rivers. Revan then released the Force in its purest form. There was brilliant flash as the air between the two combatants lit up. The energy unleashed was powerful enough to send the Emperor flying in the air in the backward direction"
He also used the Force to instill comfort and hope in the minds of his family members across the span of the galaxy. Apparently, he was able to hold Lord Vitiate off for centuries, as the Sith Emperor didn't attack the Republic for at least 300 years, more than long enough for Revan's son to grow up and never face the fear of total annihilation.[2]
When Bane discovered his precursor's legacy, he not only developed a new understanding of the Sith or the dark side, but also came to fiercely admire the Sith Lord who Revan had once been. Although Revan was redeemed in the light as a Jedi, Bane idolized Darth Revan as one of the greatest Sith Lords in history
Revan is among the few individuals in galactic history, who had significant exposure to both the light and dark sides of the Force, and he proved to be highly skilled in the use of both of these aspects of the Force. Due to these experiences, he was able to develop a perfect understanding of the concept of Unifying Force. During Revan's tenure as a Jedi Master, his command of the Force had reached to such a degree that he could channel both the light and dark sides of the Force simultaneously to perform unique feats.[2] Both as a Sith Lord and as a Jedi, Revan learned a variety of Force abilities to succeed in his plans.
Revan was proficient in the application of Force lightning,[3] and also in the use of defensive techniques to counter it.[2] Revan could use his bare hands to absorb and deflect very powerful Force lightning attacks.[2] Very few Force-users in the galactic history have demonstrated this ability.
During his reign as Dark Lord of the Sith, Revan created a Holocron in which he feeded information of many dangerous Sith techniques and rituals, including the deadly Thought bomb. Several millennia later, this holocron was discovered by Darth Bane, who noted that Revan's knowledge of Sith Lore was greater than the entire information contained in the archives of the Sith Academy in Korriban in his time
Sounds like he did quite a bit and he was considered the most powerful jedi of his time.
Oh and that whole rule of two thing Darth Bane created was based of whos idea of yeah Reven.