Gears of War: E-Day

Chapters close behind you. In Act 2, Chapter 2, Hold the Line, the gate to Charlie Squad and the hotel at the end of the chapter are two: pick up what is around before going through.

Each one has to be accepted when it is offered. Some you are pointed to; others you only find by following a firefight or a conversation, and some are tied to a moment in the chapter.

Some collectibles and Hard Cases only become reachable after a main objective. If one is on the map but out of reach, it is not missed yet: come back later in the chapter.

One collectible is only handed over when the campaign ends, so the count is not complete until you have finished Act 5.

Replay the chapter of the Hard Case.

They need all of the above as well as Insane; see the Achievement Roadmap for how the difficulty part reads.

Chapters close behind you. In Act 2, Chapter 2, Hold the Line, the gate to Charlie Squad and the hotel at the end of the chapter are two: pick up what is around before going through.

Each one has to be accepted when it is offered. Some you are pointed to; others you only find by following a firefight or a conversation, and some are tied to a moment in the chapter.

Some collectibles and Hard Cases only become reachable after a main objective. If one is on the map but out of reach, it is not missed yet: come back later in the chapter.

One collectible is only handed over when the campaign ends, so the count is not complete until you have finished Act 5.