I played it around 30 minutes for some reason. Balance is completely broken. First run bought me all upgrades, second run gave me 99 DNA. The runs are tediously long and repetitive. enemies do not require any tactics, too few variety. level design is almost irrelevant, since they spawn at the border and bullets go through walls. Iframes are complete nonsense, combined with healing on lvlups it makes you invincible in huge (probably bugged) waves but highly susceptible to 5 or so enemies at a time. visuals are unclear and I couldn't grok the controls after all this time.