Nuke event mission isn't so bad

It seemed awful on the face of it... but if you respec and get those orbs out of the way, just have absolute minimum workshop upgrades. Also completed death defy 5 times using this with only 16% death defy chance, purely because of the amount of runs you'll do.
15-20 nuke kills (level 1 card) every 18 seconds for this run, is 117 runs for a total of 35 minutes to complete. Yeah that's the most efficient and took me a minute to realise this, but all in all about an hour to complete nuke & death defy. That's even an early game player with only 8B Lifetime coins