Ditto is Searching for the Storm Shards

So to recap, Ditto is searching for the missing Portal Piece, and that piece is apparently being held by some big scary titan thingy.  So Ditto has to find these storm shard pieces, then summon the big scary thingy, then try not to get eaten by the big scary thingy, then get the final portal piece…  Sounds simple, doesn’t it?

All I want to know why we can’t just, like, plan to blow him up or something, since we’re summoning him and know he’s coming?  Maybe I just like blowing things up a little too much…