Project Spark

This is for completing Big Reunion without losing all six chocolate health pieces and was glitched at the DLCs launch but is now FIXED.
Although now it does unlock, various people have been reporting that even when they die they still unlock this achievement but this does not happen for everyone. So feel free to play the DLC and you might unlock it even with dying, worse case you'll just have to play it again without dying.

It's really not that hard, assuming you go for the miscellaneous achievements first you should be a expert at the game and you'll be allowed to make mess-ups then.

Brewery - Nothing here can really kill you here, avoid the Tediz right at the start and just jump on the other end of the platform where the Tedi (is that the right singular for them?) is at the top during the carry crate/barrel segment. If you do take damage, a few chocolate pieces are scattered around.

Forest - Stealth segment isn't hard, plus chocolate in a few spots along the way to the end. During boss fight lure the chainsaw wielding Tedi to the outhouses, do a three hit combo on him and then lure him to another one, rinse and repeat. If you by accidently mash one too many attacks and do a fourth hit, he'll probably catch you with his chainsaw, no problem as three chocolate pieces are scattered around.

Gun range/laboratory - The first segment isn't that hard, assuming you got the achievement for not getting hit at all you should be bale to breeze right through with getting hit maybe once or twice, no problem as four chocolate pieces are scattered in the back before you go in the door to the boos area with the key.
The boss is probably the hardest part, his laser will hit you two damage and it comes out and fallows you very fast. His laser will brake the wooden crates if it stays on them too long but not destroy the stone blocks at all, so obviously hide behind the stone ones or if your trapped behind only crates alternate back and fourth every other second so the crates won't break. Run to the "context sensitive area" which is a giant B button, then run up and melee the boss in the nuts (literally) and then continue circling around clockwise when the lasers stop and get to the second and third button so you can hit him for a second and then third and final time.
A bunch of chocolate pieces are scattered around but I suggest saving those for after, chances are you'll get hit going for just one and lose two in the process.

Final phase you have to save the Clock & Plucker. Drink some beer and then pee on the two fuses in the front and then get the third all the way in the back. Then repeat a final time to save Birdy. You only get so much ammo, so try to land your pee streams on the target, refill at the context spot when empty. Walking in to Birdy while on fire will hurt you for one piece, I don't think it will for the fuses but if you fail the first or second part I believe you'll need to restart the WHOLE thing.
Not too big a deal considering how many times you had to restart for those misc. achievement I mentioned before. We appreciate the aggravation and length padding Team Dakota.
Achievement should unlock right after putting Birdy out.

Hey guys, I made a video of the no death run, as well as doing the Broke the Seal achievement for perfecting the end. Check out the walkthrough for a more visual guide.

Enjoy