 If you liked Berserk: Ougon Jidai-hen I - Haou no Tamago |  ...then you might like Shingeki no Kyojin |
Blood. Limbs and guts scattered. Oh my, your hands would probably get sweaty as you see squads of underdogs fighting against the odds in order to not get slaughtered. These series are both set in medieval times with strong political and military themes. Also, the two have supernatural mysteries that add more to the lore of their worlds. Overall, Berserk and Shingeki no Kyojin are two thrilling, intense and series.