*Grenadier* -Deal 1,000 damage with gadgets
This achievement is self explanatory deal 1,000 damages overtime with gadgets
so anything in the gadget slot in the store that deals damages counts towards this achievement
Dima and Ronin's abilities count towards this achievement
if you are having trouble Ronin and Saint are the easiest way to go as their gadgets matter about placement, you gotta just have them trigger 10 times.
You can get this done in one match of Strikeout.