Completing the game requires you to acquire 25 sets of plans, and each day brings a stiffer challenge, so you’ll want to balance out beefing up your resources with reaching the final mission. Collecting weapon and formula blueprints — formulas are single-level boosts than can be purchased and equipped before embarking on a mission — helps make you a deadlier spy, and you’ll also need money to purchase more ammo and additional guns once you’ve acquired the blueprints and formulas. It’s a pretty interesting system that gives you some wiggle room over how you approach the missions.