No missable achievements (plus 8 unknown)
Sign in with Steam or Xbox to track your progress, and:
Reach at least level 10 or above.
Reach at least level 50 or above.
Complete the black hooded hatchet mission.
Have at least 100,000 on you at once.
Reach at least level 140 or above.
Complete Joshua's mission and show him all Heropedia enemies.
Have at least 1,000,000 on you at once.
Complete the lost warrior achievement.