Weapon bonuses can be awarded as bonus powers in ME. I am able to get sniper rifle skills as a bonus power in ME1 for my engineer char but the other weapon classes are unavailable.
The only achievement I know that unlocks bonus weapon skills is the Medal of Honor (complete the game on any difficulty).
I don't know if it specifically unlocks assault rifles. Maybe they forgot about it?
Thanks. I'm not quite sure if his thing is working correctly for weapons. I've used rifles since Eden prime and halfway through Ilos now without the bonus unlocked, you'd think I'd have killed 150 enemies by now.. If I'm unable to create a vanguard with AR skill after finishing the game I assume its bugged and will have to make do with assault training and shock trooper spec =(
Those are achievements for the original version.
Legendary has fewer achievements, changed some of the conditions, and removed a lot of the bonuses (only the companion and skill bonuses remain).
If you go to Extras, there is a menu where you can see unlocked achievements, and it will tell you the bonus once you've unlocked it (not before, sadly). The achievement for completing the game once should be the one for the weapons, but again, I don't know if assault rifles is included.
@devSinAh. I just checked. Yes, this achievement, Medal of Honor does unlock AR and SR for all classes as a bonus power.
