Unlockables:Unlock the following bonuses by performing the corresponding tasks: BONUS – HOW TO UNLOCKGenocide Gun – Beat all missions on Inferno.PX50 Bound Shot – Beat all missions on Hardest difficulty.Y20 Impulse – Beat all missions on Hard difficulty.ZE Launcher – Beat all missions on Normal difficulty.Zero Laser Rifle – Beat all missions on Easy difficulty.Level 13:To easily complete level 13, swim in the water and lets the ants surround you. You will eventually be able to walk on top of them and shoot them. Level 25:Bring any desired weapon and C70. It starts appearing on the Hardest difficulty around level 36; try farming level 40 on Hardest. When the level begins, start dropping C70 off the sides of the path and detonating them. The C70 has a 40 meter blast radius; be careful not to be within the blast radius. You should be able to get the enemy numbers down to about 20 by doing this. Then, just mop up the remnants. Note: This also works on Infiltration 1. Level 21:This level will introduce you to the big brothers of the black ants: the red ants. These ants have an incredible amount of armor and attack in big waves, allowing them to survive your hail of fire long enough to get close and hurt you badly. Simply running and gunning won