Talk:FGO 2016 Summer Event/@comment-28893294-20160828200141/@comment-10691202-20160829010357

There is no actual route in both part 1 and part 2 development. Ending will be same regardless of what development you chose.

The choice of development only affect the building built and the conversation pieces with respective servant(s) once you completed them. You also get 20 mana prisms or Crystallised Lores (for the last development quest in part 2) for the first time you make each unique choice in the development. The only choice that carry over to part 2 is the statue that you built (though it will only affect conversation you will get in part 2 of event). Just make sure that you had built the statue and dont tear it down again. Else you cant proceed on one of the main quests until you rebuilt it again in part 1.

After first time clear, you can reset your development at anytime to get the other options but dont forget that you will need to use materials again.

Imo, if you have not finished all main quests, as you had mentioned, just focus to clear the main quests first to get your sca assasin to permanent. Otherwise, you will lose her once event ended. Once you cleared all main quests in part 2, clear the unlocked quests to get 4 gaebolgs replicas, and get her to NP5 by exchanging those gaebolgs in part 2 shop