Death Rot is faster, has more damage and has a higher critical strike chance. Critical hits now always trigger explosions.
Solus is faster and has more damage. Tier 3 and Tier 4 are now all homing.
Star Weaver Tier 1 and 2 have buffed damage. 'Burning cores' fired from the bow are now more powerful. Tier 4 Star Weaver shoots multiple Stars instead of just one upon right clicking.
Shard of Thanos now has increased damage. 'Primordial Blasts' fired from the weapon now appear faster and deal more damage.