No missable achievements (plus 19 unknown)
Sign in with Steam or Xbox to track your progress, and:
Get your first Perk.
Buy your first equipment item.
Use a superweapon ten times.
Destroy a boss with a 5x or greater combo.
Collect 100 powerups.
Destroy 100 Spamicopters.
Destroy an enemy with a reflected projectile.
Win a Versus game.
Complete the Campaign.
Reach level 20.
Amass 1,000,000 scrap.
Equip an elite weapon in every standard weapon slot.
Obtain every superweapon.
Reach a 50x combo.
Collect each type of powerup at least once.
Figure out a way to destroy a red Shadow enemy.
Play a Battle Chains series that reaches Round 5.
Send over 500 enemies to opponents in Battle Chains games.