Is there a difficulty level above insanity?

mass-effect-3

Nope. Insanity is as tough as it gets.

Though I'm not sure why you'd want more. Insanity is pretty unforgiving as is.

Related

Why does my Minecraft skin overlay not display in-game?
What happens to an item that doesn't sell?
Is there any way to restart the Tiny Death Star Holiday Decoration Event?
What is the ultra wormhole shiny rate for Pokémon ultra sun and ultra moon
What is an effective strategy for farming yellow+ drops?
Do WALLS matter if I'm building the 6-inch brick defense from Corruption/Crimson for my city?
Does the DPS of a weapon affect a Wizard's primary attack damage?
Where are the corrosive weapons at?
What are all of the named locations?
Where can I find the Vault-Tec lab coat?
Number next to a Guardian's name?
Locked myself out at the waterfall location