

Do not sell a maxed out weapon back to the store! If you do, you lose all your upgrades on it.

All together, you need to collect and/or buy between 150-160 nodes (these cost 10,000 credits a piece at the store) for this achievement (I don't know the exact number). Each weapon and suit component requires a certain number of nodes to power up to its max level. In order to get the achievement, you have to power up every weapon in the game, your Rig, and your kinesis and stasis modules using the Benches found throughout the game. All you accomplish during your first run through carries over, including the schematics you've brought to the store, so first you have to make sure to pick up all the weapons so you have them available to upgrade. It can be twice on easy though, so it's not all that bad. You will need to run through this game at least twice to get this achievement.
