Easy wins for Trial Of Blood Right:
Customize a Timber Wolf Mech with the following:

300XL Engine
10 (20) Heat Sinks
4 Jump Jets
STD Internals
12.00 T Ferro-Fiberous Armor

Armor allocation
Head: 9
Right/left arm:24
Right/left leg: 32
Center torso: 32-14
Right/left torso: 32-10

Weapons/Ammo:
8 LRM-15 w/1 ton ammo each
With this setup, just lock and fire one string of missiles out to two, fire the next. Keep following that pattern to kill everything in thirty seconds.

Mission select:
Enter FREEBIRTHTOAD as a name.

Stealth kills:
If an enemy mech is on the other side of a wall, ram into the wall and zoom in. You will be able to see and shoot through the wall. Note: This trick works with mountains and other walls that cannot be destroyed.