I have been playing cryptoshots for a while now, and its taken me almost two months of playing each day to build the skills to be able to win on the hard setting for level-0.
Maybe, many of you think this is easy, but its not easy for me, who isn't such a great first person shooter. I foudn the tricky part with this is the ammo, even with all the ammo NFTs, I was always running low on ammo, so I needed to make sure I had a good ammo strategy. My staretgy is as follows
Small enemy - use the base weapon (or rapid fire) - 5 shots
Medium Enemy - use the laser gun (epic) - 1 shot
Large Enemy - use 2 base weapon shots, and one laser gun shot
Use the shotgun for groups of enemies. This strategy worked, and I was rewarded. Normally on medium I get about 2 boom for completing the level, this time I got 3 boom. Might not sound like much but it adds up. I am not quite fast enough yet to play hard efficiently, but I will get there.
After I get consistent I will try to do level1. I find I always get lost on that level!