Commander difficulty achievements

[rinaldop]

I finished the game on Veteran difficulty and I am now going achievement hunting. If I read things correctly all of these could be unlocked on one play-through, correct?

Defender of Humanity
Overthrow the aliens on Commander difficulty

Valhalla
Beat the game on Commander+ difficulty in Ironman mode

The Untouchables
Beat the game on Commander+ without losing a soldier

Overpowered
Beat a mission on Commander+ with a squad composed entirely of soldiers of the same class (but not Rookie)

The Few and the Proud
Beat the game on Commander+ difficulty without buying a Squad Size upgrade

Exquisite Timing
Beat the game on Commander+ difficulty by July 1st

[Sunwave]

Technically, you can get them all in one playthrough, yes.

But for example "finish ironman" and "don't lose a single soldier" is gonna be difficult to get both at the same time. In fact, "no squad size upgrade" is gonna be difficult even without ironman.

[Dorok]

Last one means rush the game? Im' trying first two, and that's rude and require a constant concentration at high level and never fall into overconfidence or temporary hope lost. :-)

And won't care on other, but I was curious about last one.

[Serm]

I waste time for training Psi and end game at September.
If we not use Psi at last mission. It may possible.