Rare Replay

This achievement requires simply that you reach the ending of each chapter, and transition from each to the next. This being the case, there are two ways to approach this achievement. You can either play through the entire game and enjoy it from start to finish, or you can cheat. The assumption is that if you are reading this guide, you want to be done as quickly as possible, and so that is how the guide below will be structured.

To start off, you will need to unlock all of the chapters. From the main menu (the bar) go to options, and then cheats, and enter the following codes:

• WELDERSBENCH - Unlock all chapters.
• VERYEASY - Activate Very Easy Mode; makes the game easier overall.
• BOVRILBULLETHOLE - 50 lives; for those tough levels.

The above cheats will make life easier for you as you go through the required levels. Once you have all of the chapters unlocked, go to the main menu again and then to chapters. Review below for the exact levels you need to complete and tips on how to do each. Before quitting out from each of the below, check your achievement progress to make sure it registered.

Hangover > All
Refer to "Conked Out" for more information. I suggest starting with that achievement before starting this one, as completing the first chapter for that achievement counts towards this one.

Bat's Tower > Bullfish's Revenge
You need to outrun the Bullfish. After the cutscene jump in the water and head down the river, using the catfish as bait to lure him away from yourself. Get to the end of the short river and another cutscene will play. Exit through the door and you're done this chapter.

Barn Boys > Frying Tonight
For this level you need to escape the large water filled room before the water rises and you're electrocuted. Head to the Exit signs ahead of you when you start and climb up the ladder. At the top of the ladder there is a "B" spot for you to press  on, and it will give you knives. Use the knives to knock down the three electrical wires hanging from the ceiling. Note that one of them can be hard to see as it will be mostly submerged in water. After you've knocked all three down hop back in the water (make sure it's not visibly electrocuted) and move to the next ladder (it should be easily visible). Repeat the same thing again and the water will rise to the top of the level, and you'll be clear to exit the level.

Barn Boys > Slam Dunk
This is directly continued from the last level. Go up the ladder to your right, and keep going up all the ladders following until you get to the top, avoiding the bees as you go. When you reach the top you need to jump off the diving board and press  when a light bulb appears over your head. This will open a gate on the ground for you to enter. Climb the ladder and jump to your death; this will put you back to the base of the ladders. From here, jump down to the ground (you won't die from this height) and go through the gate that you entered, and pick up the cash.

Slopranos > The Bluff
All you have to do here is walk to the weasels in front of you and watch the cutscene, then exit the level across the bridge.

Uga Buga > Buga The Knut
You need to beat the boss of this chapter for credit. Buga is fairly simple; you need to bite him in the groin, and then when he drops his pants, bite him again on the butt. If he jumps, you need to jump over the ripples he creates. If he winds up his bone that's him opening up for some crotch grabbing. Bite his behind three times and he will run away. Exit through the door beside where he exited and watch the cutscene.

Spooky > Mr Barrel
This is a quick level, though it can be tough. You need to hop on top of Mr. Barrel who is in the room you start in. After you jump on, direct him out the front door, then go down the winding path and out the exit. The controls here can be tough as it does get pretty fast. I suggest tapping the analogue stick to just nudge yourself around the corners, rather than doing hard turns. After you've exited the starting area you will be in a graveyard. Exit the graveyard and hop in the water (still on Mr. Barrel - he is required). Take Mr. Barrel to the right and up the watery path (you can't go up here without him). There's a patch of dirt with an exit, and jumping up there you will lose Mr. Barrel (this is ok). Go through the exit and you're done the level.

It's War > Peace At Last!
Very simple, there's a cutscene, then you need to go through the exit back to Windy. Done and done.

Heist > The Vault
You'll need to complete the final boss of the game. Darn it all, right? The boss has three phases, all basically the same, with some new attacks thrown in for each phase. You need to dodge his attacks by jumping, and then punch him four times(mash , ends with an uppercut and stuns the boss). When you boss is stunned you need to run around to his back, and you will automatically grab his tail. If you've ever played Mario 64, this is exactly like Bowser boss battles. Rotate the  until he stops grating on the floor with his nails, and then throw him with  into the hole in the ship. Repeat this three times to beat him. After the first phase he will start to dodge your punches sometimes, but he will do this far less if when you jump you land very close to him (right on top of him). 

After watching the final cutscene your achievement should pop. If it does not, as has been reported by some, try replaying the last level of each chapter in order, as the game may have missed one.