Contra Anniversary Collection

TIME SAVING METHOD: Create a save at the stage 4 decision point while connected to the network, then go offline and feel free to save incremental progress if you don't want to beat the rest of the game without saving. Once you beat the game, delete your local save and then go back online. It will sync the cloud data and you are back at the decision checkpoint when you reload, so you don't have to play the game up to that point again for the other achievement. The E Route bosses are easy enough to not worry too much about it, but this game gets rather hard toward to end and just to make it tolerable, this tactic should make this game a breeze. You have to play through the beginning again for the other level 1 decision though and then you can do the same thing for that branch. This basically means instead of 4.5, its closer to 3-3.5 full playthroughs with save ability rather than saving at the 4th level branch and continuing without saves and a headache, just to get back using the save point again. This cuts down time spent in this game by a lot.

Hi, i chose "Research Center" and "Surrender" and achievement did not pup after ending.... Some ideas?

EDIT: Ending must be done single player only