- “You now have everything you need.”
- ―Achievement description.
Upgrades is an achievement in the Zombies map, Schule der Untoten. It requires the player to upgrade a perk in the Perk Booster Machine and upgrade a weapon in the Pack-a-Punch Machine in one match.
| Remember When... Achievements Source | ||||
| Storyline Easter Eggs | First Time Lucky • Mister Mapper • Resident Easter Egger • Master Easter Egger | |||
| Schule der Untoten | Typical school day • There's more? • MAXIS! • Let There Be Light! • Are there any left? • Fooled • Upgrades | |||
| Platzieren aus der Tot | Cashing a check • Sssssssssssssss... • Door's open • Look behind you! • Savior • Industrious Little Fellows • Small or large? | |||
| Wahnsinnig der Kirche | Sunday Mass • More than one • They're everywhere! • Power House • Life Solemnly Ended • Mishap of Massive Proportions • You've been schooled • Helped the Church • May they Condemn you! | |||
| Krankenhaus aus Verdammten | Brain Surgery • This is the right one... • Sweet... • Remembrance is Key • Hospitals are scary • Damn! | |||
| Geist Wohnhaus | Party Time • Teamwork • He's Got A Brain • Dinner is Served • Away and Out of the Way • Who blew up the bridge? • Step back | |||
| Einen Langsamen Tod | The Most Anticipated... • What is that? • Mass Chaos • Returning the Favor • The All Might • Back from the brink • Another two | |||