i will answer to that too, cause i am a durakuir.

1st step : - earn PX, train to go to level 2.

then if you choose to buy some more hit points (PV), you will have to wait to earn 20 more PI.

Don't buy the hp 5 by 5 ! ! !  For a durakuir, it s a big mistake cause régénération accrue allows you for 2 action points only to gain 1d3 hp for each 10 hp over 30 ( 40hp -> 1D3, 50 -> 2d3, 60 -> 3d3, 70 -> 4d3, and so on...)

so earn 20 more PI then do "s'améliorer" and buy 10 hp, for only 18 PI.

PS: y'a pas à dire ça se voit que l'anglais c est pas du tout notre langue maternelle (moi y compris) ;-)