Use this loadout:
Map: wrecked battlefield
Place a farm at the corner of path and upgrade it to lvl 1, then skip
Wave 2: place lvl 0 farm at the corner of path, skip this wave too, after the timer shows up upgrade the farm to vl 1
Wave 3: skip this wave, after that place ace pilot at the back of map
Wave 4: place a farm at the corner of path again, skip this wave
Wave 5: upgrade your ace pilot, farm little bit money and upgrade farm to lvl 1
Wave 6: place a farm at the corner of path again, skip this wave, upgrade one farm to lvl 2
Wave 7: upgrade your farm to lvl 1, after the timer ends upgrade another farm to lvl 2
Wave 8: upgrade another farm to lvl 2 too, place a farm at the corner of map again, upgrade it
Wave 9: upgrade your ace pilot to lvl 2
Wave 10: skip this wave
Wave 11: skip this wave too
Wave 12: place accelerator at the back of the map where ace pilot is, after the timer ends, upgrade another farm to lvl 2
Wave 13: upgrade another farm to lvl 2, skip this wave, upgrade your another farm to lvl 2
Wave 14: place a farm, upgrade it to lvl 2, place another farm, skip this wave
Wave 15: upgrade your farm to lvl 2, upgrade accelerator to lvl 1, dont skip
Wave 16: upgrade one farm to lvl 3, upgrade other to lvl 3 too, after timer ends upgrade another farm to lvl 3
Wave 17: upgrade accelerator, after timer ends upgrade any farm to lvl 3
Wave 18: upgrade 2 farms to lvl 3, place another ace pilot at the back of the map, and upgrade it, dont skip this wave, after timer ends upgrade ace pilot to lvl 2
Wave 19: upgrade accelerator to lvl 3, skip this wave
Wave 20: upgrade ace pilots to lvl 3, place commander at the back of map at the corner of path, dont skip, after timer ends upgrade commander
Wave 21: Do COA, dont skip
Wave 22: place another accelerator, upgrade it to lvl 2, dont skip
Wave 23: upgrade accelerator to lvl 3, when shadow boss gets close to accelerator range do COA, upgrade ace pilot to lvl 4, dont skip
Wave 24: save money to max ace pilot
Wave 25 upgrade ace pilot, after shadow bosses get close to accelerator or commander ranger do COA
Wave 26: after slow bosses get close to commander range do COA again, dont skip
Wave 27: max another ace pilot, do coa when rushers will come,
Skip after rushers will die
Wave 28: do nothing
Wave 29: place 2 ace pilots in front and max one ace pilot, upgrade ace pilot to lvl 3, dont skip, upgrade ace pilot to lvl 4
Wave 30: max ace pilot, dont skip this wave
Wave 31: place commander in front and upgrade to lvl 2, after shadow bosses come to commander do COA, place accelerator in front and upgrade it, after fallen titan comes to commander range do COA
Wave 32: keep doing coa in back until fallen titan dies, upgrade one accelerator to lvl 4
Wave 33: keep doing coa
Wave 34: max your accelerator, keep doing coa until fallen titan dies
Wave 35: upgrade accelerator to lvl 4, Keep spamming coa until the fallen titans die, place a ranger and upgrade it
Wave 36: place another ranger and upgrade it, keep spamming coa, place another ranger and upgrade it
Wave 37: keep spamming coa and rangers until grave digger dies
Wave 38: spam rangers and upgrade them, spam COA, upgrade accelerators remaining to lvl 4, place 2 commanders in front and upgrade to lvl 2
Wave 39: place more accelerators and upgrade them, spam coa
Wave 40: just spam coa
Wave 41: sell accelerators in back of the map, place more accels and upgrade them, Keep spamming coa
Wave 42: max your accelerators, upgrade commanders and spam COA, 43: place accelerator and upgrade it, place more accelerators and upgrade it, keep spamming coa
Wave 44: upgrade your accels, keep spammning coa
Wave 45: upgrade rangers, and max accels, keep spamming COA, max one commander, place 4 ace pilots and max them [so rangers had HD]
Wave 46: max your rangers, Spam COA,
Wave 47: max your commanders, Spam COA, max one ranger, keep spamming coa
Wave 48: max your farms, max your rangers, Spam COA, Keep spamming Coa until fallen king dies
Wave 49: Keep Spamming coa
Wave 50: KEEP SPAMMING RANGERS AND MAXING THEM, AND SPAM COA UNTIL THE VOID REAVER DIES, MOVE TOWERS IF VOID REAVER IS OUT FROM THE ACCELERATORS RANGE
There you go, solo hardcore win
And you will get the crate you wanted for free
And 250 gems reward :p
You can die by his guardians sometimes and you will get 100 gem reward :(