Get Triple Wave:
Acquire the Wildfire helmet, Electroshock torso boots, Sludge Mk 9 gloves.

Skins Unlockable:
Ratchetzilla Skin - Get 6 Titanium Bolts.
Plundering Pirate Captain Skin - Get 6 Titanium Bolts.
Troical Vacation Skin - Get 4 Titanium Bolts.

Dan Skin Unlockable:
Accomplish 10 online matches without dying to obtain this skin.

Titanium Bolt on Outpost Omega:
Find the area where you perform the wall jumps. At the top of that section, look at the vendor box. Do a180 degrees spin and the bolt should be there.

Titanium Bolt: Pokitaru
When you arrive onto the second boat after the crab island, there are two portions of land with robots. On the second portion of land, jump off and go towards the side of the building to your left. There is a bolt on a narrow strip of land.

Titanium Bolt in Challax:
Walk into the city and after passing by the first purple electro-fence, head to the left and there is a a baggage claim or conveyor device. Wait there for a bit until the bolt appears.