"Kill Final Boss With All Mechs" achievement bugged

[adamjohnson]

I have all 6 of the 'Kill "Finall Boss With <insertt> Mech" achievements unlocked, but the "With All Mechs" achievent is not unlocking. And looking at the global stats, both "Final Boss With All Mechs" and "Real Final Boss With All Mechs" have the same percentage of player unlocks, so I'm wondering if the Final Boss achievement unlocking is mistakenly tied to the Real Final Boss criteria?
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[Logorouge]

Bad news: The "With all mech" achievements don't work at the moment.
Good news: They should be fixed in the next update, as mentioned in the changelog page. (Look at the last few changes of 1.508)