LEGO Batman 3: Beyond Gotham

There are 10 minikits in the ‘Arrow’ level. The Adam West in Peril doesn't count towards this achievement. When you have collected them all, you can Save & Quit and the achievement will unlock in the recap screen.

Characters required: Target character, Magnet character, Burrow character, Melt Gold Bricks character, Hazard character, Poison Ivy.

Their locations are as followed: 

1) Minikit #1: At the start of the level walk to the left and towards the screen and you will see a Deathstroke mask on a stick. (1/5) On the other side of the plane to the right of the wing is the second mask. (2/5) In front of the plane on the right side is the next mask. (3/5) In the area where you blow up the tower, instead of heading through the gate head towards the screen and in the bottom left corner is the next mask. (4/5) In the same area head to the right, stay towards the bottom of the screen and it will be at the end of the path. (5/5) *Attainable in story mode.*

2) Minikit #2: In the front left corner of the level, towards the screen, there is a pile of wood with a target at the top, shoot it. (1/3) When you get to the second area, where you get the bow, in the bottom right corner is the second wood pile. (2/3) In the area where you blow up the tower, instead of heading through the gate head towards the screen and to the right. The last one will be right in front of you. (3/3) *Attainable in story mode.*

3) Minikit #3: On the left side of the area you will see a magnetic bomb, use Cyborg to lift it out of the ground and grab the minikit. *Only attainable in free play.*

4) Minikit #4: Walk over the wing and then over the plane onto the wing on the other side, underneath that wing is the minikit under some lego pieces. *Attainable in story mode.*

5) Minikit #5: Just to the right of the last one is a Solomon Grundy point, use it and then have Felicity crack open the safe for a minikit. *Only attainable in free play.*

6) Minikit #6: In the middle of the plane you will see a grapple handle that you can pull, do so and destroy the box to grab a minikit. *Only attainable in free play.*

7) Minikit #7: After crossing the waterfall to the left of the first mine is a gold flower, destroy it and grab the minikit. *Only attainable in free play.*

8) Minikit #8: In the area where you get the bow and arrow, on the left side of the area is a poison ivy point, go through it for the minikit. *Only attainable in free play.*

9) Minikit #9: In the same area shoot all the targets and a bat sense will appear to the left of them. Use your senses and turn the handle to make the targets reappear. Shoot all the targets and the minikit is yours. *Only attainable in free play.*

10) Minikit #10: In the area where you destroy the tower head to the bottom of the screen and to the right, stay next to the fence and you will see a giant box, open it and build the Lego pieces. Next you will have to find 30 of those red/green/yellow pieces to put into the machine. You can find 15 in some barrels to the left of where the tower was, another 10 in some barrels to the right of the silver truck you have to blow up, and the final five are in the previous area, where you came in, inside some barrels. Once you have all 30 put them in the machine for a minikit. *Only attainable in free play.*

Many thanks to HappyThumbsGaming for the text and video locations:

Like each level in the main game, there are a total of 10 minikits in this level. They are not all available to you in Story mode, so you will have to complete this in Free Play. Once you have obtained them all, you can Save & Exit and the level will count as complete, unlocking the achievement. Refer to the video for the locations.

Characters required: Target character, Magnet character, Burrow character, Melt Gold Bricks character, Hazard character, Poison Ivy

Thanks to packattack04082 for the video: