The apocalypse

in this world humanity has almost been completely been wiped out by these random spawning and different creatures that never been seen before, but these creatures are powerful, fortunately enough, enough humans made up an organization with all the remaining humans called the helix core vanguard, theirs about 100k humans left and their all apart of that organization, theirs 9 people who are in charge of that organization, 4 women, 5 men, they have skilled engineers and scientists in their organization,they have a large and secure base, they build mecha's to help fight against the creatures of the apocalypse, their is a leveling system to determine the threat level of the creature, level 1 - 10 is considered low threat level, level 11 - 30 is considered medium threat, level 31 - 75 is considered high threat level, level 76 - 150 is considered MAX threat level, their are some humans who are trained with advanced simulation technology to pilot a mech, the ones who pilot mechs are called mech pilots, each mech is customized to how the pilot wants it, engineers can also fix mechs depending on the condition, some mechs may need knew arms or legs because it was either destroyed or unable to be recovered from the battlefield, mech pilots can communicate with each other as their mechs have a direct communication line that's pretty established when the mech is built. (your on your own outside somewhere, your not part of their organization, you never were)