I used a max-range build on Mag, while using the “Greedy Pull” augment. This made it such that every time I hit my #1 that all the mobs within 70 meters of me got knocked down and thus couldn’t shoot at me, while all of the “point orbs” that one needs to pick up for the test within that same radius got pulled in. 3 quick circuits around the maps was all it took for me to turn in well over the 100 points needed.
I did the water gun arena event that’s currently running. There wasn’t much to it — no weapons other than the provided super soaker, nor abilities nor mods are in play, so the frame and loadout one takes in is simply cosmetic. The level ranges supplied by the event navigation page are a lie — the 4th “mission” had mobs with the same levels and difficulty as the 1st. I got at least 30 “soaks” on each run, so I didn’t have to repeat any of the runs, so I didn’t know that was a possibility until a friend ran it and didn’t get 25 “soaks” and thus didn’t get enough event points to move on the the next round. So if you’ve not run it yet, if/when you do, try to get at least 25 kills each round. 😀
Happy gaming out there!