Small feedback on traits that seem to be entirely or nearly useless and very frustrating when you are forced to choose between 1 of 3 useless traits.
Faster projectiles - almost feels negative, as faster projectiles mean they will travel offscreen faster and have less chances to hit anything and not adding any value otherwise. Scenario when you need to hit incoming mobs 50% faster for the cost of 5 perks would probably be worth it only in case enemy can 1 shot your wall if he reaches it fast enough.
Fragile and heated above lvl 1 claim to add only duration, in this case they are useless 99,99% of time, since they will never expire on boss due to constant reapplication and normal enemies die before lvl 1 will expire.
Studious - exp bonus not enough to grant more perks then not choosing it. Hero with lvl 5 studious end up being 2-3 lvls higher then ones without trait, meaning they lost 2-3 perks total.
Focused shot - seems outright harmful, as focusing one enemy instead of shooting at multiple will end up wasting shots most of the time, and focusing single target is already default behaviour when there's only 1 enemy.