Splatterhouse

You can get S-Ranks from doing the survival round(s) under a certain time. See 'Jason Schmason' achievement for rough times to do it in.

Just do the first level, and kill everything as fast as you can. Don't worry about the splatterkills, this soaks up valuable time. Use splattersplash, especially on the big guys and tentacle guys, this is powerful and heals you too. Plenty of bloodworm chests drop to give more blood.

Pull an arm off an enemy, but instead of grabbing and bashing, B-B, I found it quicker to jump and heavy down on thier heads. Swords are great here, one hit kills, but the timer keeps going until the body dissolves, so any left standing headless, run over and knock them down when you've killed all the 'live' ones.

Your ranking is based upon how quickly you complete the arena. Here are the times you will need to beat:

West Mansion Lobby: 12:00min
Slaughterhouse: 16:00min
West Observation Room: 23:00min
Death Coaster: 25:00min
Shadow of the Wickerman: 26:00min
West Manor Chapel: 20:00min

Below are embedded video walkthroughs for each arena (in order of the list above) made by TheXBOXSheriff, or you can click on the links below. But first, a word of advice:

I suggest completing the campaign first and unlocking all of your useful upgrades such as higher health and more powerful moves to make these Survival Arenas easier. Once you do that, you pretty much just want to kill all weaker enemies with weapons that come out of the chests and kill the more powerful enemies with LT+Y(Splatter Smash). 3 of those attacks with take down the toughest enemy.

If you get a shotgun keep it lying around until you're in need of Necro Bars and then blast an enemy away with it. It will fill up your Necro Bars very, very quickly. Good luck!

Survival Arena S Ranks
Tips
Arena 1: West Mansion Lobby
Arena 2: Slaughterhouse
Arena 3: West Observation Room (Part 1/Part 2)
Arena 4: The Death Coaster (Part 1/Part 2)
Arena 5: Shadow of the Wickerman (Part 1/Part 2)
Arena 6: West Manor Chapel (Part 1/Part 2)

I got this achievement on the "Slaughterhouse" Survival Arena in a little under 15 minutes.

Before starting make sure you've upgraded as many of your skills as possible, in particular both weapon durability upgrades and the charge attack. Upgrade the Necro and Health bars too.

I found the key to finishing this level quickly was to use weapons, in particular the cleavers. When you have a weapon, hold down RT and the Y button: this will cause Rick to dash towards the closest enemy and automatically slash them with the weapon. This move will instantly kill many of the smaller enemies and will always slice an arm off the butchers. This is a great maneuver to use when you have to cover long distances.

If you don't have a blunt and/or sharp object, tear the arm off an enemy (B + B) and use that. This level has numerous butchers, so cleavers are fairly easy to find.

This arena will feature plenty of octopi enemies; make them your priority when they appear. Stun them with the charge move and then finish them quickly with the Splatter Smash (LT + Y).

Save Splatter Smash for the big guys, or for when you're surrounded. Splatter Smash will kill the giant enemies in 2 - 3 hits.

Don't do Splatter Kills; they take too much time. When an enemy is glowing red, just kill them normally.

If an enemy has been defeated but hasn't fallen yet, slash them down quickly.

If you have to refill your health with Splatter Siphon (LT + B) only do it long enough to fill the bar; when the bar has re-filled, stop tapping B and get back on the offensive.

Your mileage may vary, but I never switched to Berserker mode.

Good luck.