My version was a Dutch copy, but main audio was English and managed to navigate quite easily to turn the subtitles off.
Some of the on-screen titles and credits were in French ( the occasional "Downtown Factory 7.30am"), but even if you couldn't read French it wouldn't matter to the plot. Bit odd that a Dutch version had French bits, but no problems.
As far as the show went, I don't wish to sound unkind, but I can see why it was cancelled after one season.
No disrespect to the actors, who all carried off their roles very well indeed - it was the rather contrived screenplays and plots which I found a bit hit-and-miss. Quality control can be overlooked if the producers make the most of location, special effects and so forth, but I couldn't help but feel that this series could have been great, with a little bigger budget and more money spent on production value and plot development.
Everything seemed a bit rushed and cobbled together at the last minute.
Some scenes were left in to extend the running time at the expense of plot or character development. You could see where they added extra coda scenes in to some episodes right at the end - they weren't even 'funny' (the crew laugh at some hi-jinx in a bonding session type scene).
Alphas gave the same themes far more gravitas and extended the ideas into far more interesting areas. I don't know what the difference in budget between the two shows are/were, but the production values of Alphas are far, far better.
That's not to say I didn't enjoy Painkiller Jane.
More that I really, really enjoyed the first season of Alphas!
In the end, even Jane couldn't survive the death by a thousand cuts of those production values - but the single season was fun while it lasted.