hoary rivet
Here is a list of all the parts that can be opened for free when reaching certain Prestige and/or Stage.
I also want to mention that all these parts can be obtained with a small chance from the Gang Box even if you haven't reached the required Prestige/Stage yet.
The complete list of parts that can be unlocked for further obtaining from the Boxes
Here is how these parts looks and their description:
Prestige | Stage | Part name
0 5 Laser
0 7 Harpoon
0 10 Pyramid
0 15 Sticky Roller
0 15 Sticky Tire
0 20 Double Rocket
1 1 Whale
1 1 Minigun
1 5 Climbing Wheel
1 10 Diamond
1 15 Shield
1 20 Boomerang
2 1 Shotgun
2 5 Rotating Drill
2 10 Rotating Chainsaw
2 15 Rotating Rocket
2 20 Double Blade
3 1 First Aid Kit
3 15 Antigravity Scooter
4 1 Lifter
5 1 Molotov Cocktail
6 1 Death Lamp
7 1 Hover Tire
8 1 Wacky Glove
9 1 Deep Freeze
10 1 Potato Cannon
