2x Reflect beam with mass destruction, vicious strikes, shattering torpedo And tenacity, rate, anti melee arranged in a box with a proton beam with destructive pylon, rate, frost beams and tenacity, rate, poison build horizontally across the middle of the box will do most lanes just fine. Add in a flame aura with overcap rate for frost. Add in a boost aura With mass destruction, destruction, boosted grasp if struggling (eg physical damage lanes, long shot, headstrong).
Fliers easily dealt with from a 2-3 nodes reflect on core and obelisk with totem and fortification to soak up emp kobolds (5 max needed for temple). Normal flying kobolds will suicide on nodes placed I’m lanes with ground mobs so long as that lane is near where the flying lane is.
Apart from that, reroll maps that take forever to build / poor du eg temple of the necrotic, molten citadel, buried bastille, longhorn valley. If you don’t have barbarian also reroll headstrong assassins.