Thread:Felix Thompson/@comment-31.52.221.147-20120405214007/@comment-4988991-20120406010306

F tickets are items you get from multiplayer missions and the DLC missions. They are needed to obtain (through extraction) some of the more harder to get items, like Blaze stone.

Vendor items are items that serve very little use, other than for selling for cash. Some you need for the story.

Even though the game looks like a hack 'n slash game, you need to go back to previous missions and side missions to obtain items from Aragami so you can get the stronger weapons. It's hard and long, but is worth it in the end, especially with the very last mission.