I genuinely dont remember him doing anything impressive prior to putting the power stone in his hammer. Havent watched the movie in awhile, he bitch slapped Drax who just seems to be durable and not that strong anyway. Groot was the powerhouse. And iono Thor took the power of a sun iono if Ronans ships are gonna hurt him at this point anymore and I dont think Ronan stands a chance. Now with the power stone he took a blast that could destroy the moon and some other impressive stuff but prior all I remember is him smacking Drax and ivr seen Gamora do more impressive strength feats then drax. I definetly could be forgetting something havent watched it in awhile