The ultimate setup: 3 grizzlies in the fron row and 3 G. dragons in the back at max level. You will ALWAYS finish off the front row of enemies instantly. Just use the dragons first, then the center grizzly, then the other two. You will usually damage the back row too. If you aren't at max level, no worries. Use the action+ ability when you have 3 magic and everyone gets +3 actions which WILL be enough to obliterate the enemy at that point.
Both challenges are completed by doing the spartan missin, which is acessable at the bottom of the main menu after you unlock it by completing a level. If one or both don't work, redo it later.
If yoiu are having trouble with the spartans, who like to kick ass, try retreating and repairing.
This game should get badges. Definitely.
Perhaps this:
Easy- Get 20 achievements.
Medium- Complete the Insane Legion.
Medium- Get 70 achievements.
Hard- Get all achievements.
Challenge- Get 35 achievements
It is a really good game and deserves a 5/5, but I got really pissed off when I got to the end and it wouldn'y let me go back and find the other trilobyte keys and get the other hard badges.
WTF?!?!? Only the first 4 levels registered, and kills stopped at 270! This is a great game, so I'm giving it a 5, but seriously guys, fix the achievements! *moan* I spent 4 hours completing all the levels...
Anyone get the final weapon? You get it after you get all the others, and it goes on your desk. It has 8 ammo and revolver-speed reload, but it instantly kills and has unlimited piercing. I killed at least 15 people at once with it one time. (Well, ok, maybe 13.) You can't lose with it. My record is 7 headshots in one hit.