Do not drop the cleaver. It will lose its powers
Cleavers can only be earned once per run through. If the cleaver is dropped or exhausted of ammo, return to the main menu and restart the map.
Surprisingly easy. Look to the sky and shoot the birds. It may take a while to score a kill. When you hit one there will be a spray and then a monstrous groan. Go to the clocktower and stand on the imulsion stain. A tentacle will burst through the wall and lash out at you. It is avoidable if you dive backwards. If you die, restart current wave and go get the cleaver. The tentacle will leave the cleaver on the imulsion stain
Build a base. Wait for Butchers/Savage Therons. Typically Wave 2 or 3. Pick up one of their Cleavers.
Wait for the storm to start and stand on the "Danger High Voltage" sign. Once you get struck by lightning the cleaver will be charged.
Shoot 5 rain gutters shown in video to cause water to pour into the imulsion. The cleaver will appear in the imulsion pool in the courtyard. Finish the wave.
Use Hammer of Dawn on the pool to raise rocks to the surface creating a bridge.
Raven Down Cleaver
Best with 3 ppl as this process needs $2900. Or do single player till enough cash is earned to complete the requirements.
Create both bases and snowmen will appear in the map. Destroy them. Go to garage and open the door, Kill the last snowman and buy the cleaver.
Nothing yet. The general consensus is that there are only 4 cleavers. We have already gone through one fake video. I will keep searching the web and trying to find the cleaver on my own.... if it exists. There is an Easter Egg in Beast mode though. The steps are at the end of the video.
I do not take credit for the videos or the work involved to find the cleavers. Alot of people devoted many hours to finding these hidden secrets. Special thanks to MutantJaws and friends for debunking fake videos. They have my sincerest appreciation.