Nice work!

I really like the opening especially with the music choice and the delay to the animation.

I got thrown off by the jump a little, mainly because it went over the lego background (or other lego like brick) and you could see over it.

I thought it was a fight scene at first; as the robot looked like he was getting attacked at the start, but if it's being used as an outro then it won't be an issue because of the amount of times it will be rewatched.

For your first "real" animation (which I'm guessing you mean the first one your proud of maybe? as you have made "real" animations before) It clearly shows you've put alot of work into this one because of how fluid the animation is.

Overall: Nice job and keep making more please ;)