Alternatively, go for Fimbulwinter. Though i have to admit, Ragnarok both sounds and is more apocalyptic than Fimbulwinter does. But then again, Fimbulwinter is that hellishly cold winter right before Ragnarok. I guess that'd be pretty symbolic; Fimbulwinter showing up just before you get blown out of the universe.

Fimbulwinter sounds nearly as cool as iCannon.

numgun! Stop crapping around with a freakin name and get working on this thing! Screenshots, Gifs, beta tests, WE WANT SOMETHING, ANYTHING!

Not ragnarok cannon, ragnarok destroyer class starship or something like that.
Its not just a giant floating cannon already, its part of it lol. x )

EDIT: But yeah, I'll go with Ragnarok. Decided!
Now to begin the final designing on the attacks the Ragnarok can perform...

Suggestions on what the giant battlecruiser can do
to the planet from orbit are still welcome.

It can suck the whole planet up. And automatically display a WIN message because you had the patience to mine for gold or figure out how to change starting gold amount.

It should appear, and show an animation of the planet being sucked up.

It should have miniguns that rape as much as your Zorn's did.

Miniguns.

SAMs. Except... ASMs... Air to Surface Missiles...
Anyhow, lots of them.

A super death lazor, like the normal Ypsilon, it'll be a challenge to everyone to make a new invincible *Blank*.

Motion sensing grenade dispensers.

Mine layers.

Manual super grenade dispensers.

Don't you mean SSMs(Space to Surface Missiles)?

It should fire some high velocity (not enough to go through the map, but maybe through the default brain bunker) meteors that hit within the range of 1-1.5 screens. It'd be like a shotgun. But from SPACE.

How about a gigantic spike you can shoot into the ground at extremely high speeds.

I think you should at least keep the big laser of death thing as the main weapon, maybe even have it be movable while its being shot (in other words a laser moving left or right on the screen), but you could also make it have alternate weapons like hailstorm of bullets raining from the sky

Maybe you could even make the attack a random selection of one of several attacks (sometimes it could be the bullet storm, another time the laser?)

Multiple lasers! Lasers all originating at a similar point (not noticeable if it's in orbit, but very noticeable if it is in the atmosphere). They come down and kill all enemy units.

4 cannon DCA turrets + Flak turrets + Minigun turrets + OMGWTFBBQ flamer turrets + Missile turret + turrets turrets turrets..... And the big obliterating laser right in the middle.

Bio missile launcher.

The gas the comes out attacks actors and depletes their health.

When the actor dies, it releases more gas.

I like the sound of this... like the proposed idea of the "rods from god" thing where it drops a telephone pole sized Tungsten rod. The kinetic energy is like a small nuke apparently.