Great episode!
Positives:
Plenty of fight scenes & good closure to season one. G1 throwbacks were a nice touch (Ark crashing into mountain & Vector Sigma?).
Negatives:
No mention of Soundwave or Lockdown & statement at end of episode that key is now more important than ever. http://utenti.lycos.it/doh/indexfiles/homer_doh.gif
I'd give it a 7/10.