BOARDING OBJECTIVE SUCCESSFUL bug/typo?

[ker]

It seems that you do not get the BOARDING OBJECTIVE SUCCESSFUL achievement if you have already used a boarding drone once in the battle. i.e. I sent out a boarding drone but realised that it wouldn't be able to kill all 4 crew members so I powered it down and let them kill it. Then sent out another drone that managed killed *all of 4 members* but did not get the tick in my virtual box for the achievement. Using patch 1.03.3.

[CFIT]

Your drone needs to make ace (5 kills).

[ker]

Are you sure? I've got the achievement now so I can't test it but I thought I got it by only killing 4 crew members. Either way - the description for the achievement says you need to kill 4 members with one drown - this doesn't seem to be quite true

[Diet Water]

I think this has a simple answer.
You used two boarding drones; the game can't tell whether the first one did any damage or not.

[abrasion]

Even with 5 it doesn't work all the time - I've been trying 3 weeks, maybe 200 games - no luck.