Connect to and defend the first Server map.
Collect 100 memory units in a single game
End a game with more than 100 extra data credits
Defend a server using debuff tower programs only
Defend a server with just delay tower programs
Build a total of 128 tower programs
Build a total of 512 total programs
Build a total of 2048 total programs
Build a total of 8192 total programs
Collect more than 128 memory units total
Collect more than 512 memory units total
Collect more than 2048 memory units total
Collect more than 8192 memory units total
Defend a server while only using a single type of tower programs
Defend all servers with core tower programs only
Unlock a new tower program
Unlock a tower program of each type
Unlock all tower programs
Beat the highscore of an already 4 starred server
Defend all servers at the 4 star level
Maintain full encryption shields without 4 starring a server
4 star a server in a single try while defending it from a Virus attack
Defend a server using at least 3 Portal tower programs
Defend a server using only tower programs with a cost of 10 or more
Defend a server from a Mutating Virus infection
Defend a server from a Routing Virus infection
Defend a server from a Bypassing Virus infection
Defend a server from a Replicating Virus infection
Defend a server from a Slippery Virus infection
Defend a server from a Encrypted Virus infection
Defend a server from a Persistant Virus infection
Defend a server from a Recurring Virus infection
Defend a server from a Resilient Virus infection
Defend a server from a Compressed Virus infection
Defend a server from a Polymorphic Virus infection
Achieve a highscore of over 64Kb while defending a server
Achieve a highscore of over 128Kb while defending a server
Achieve a highscore of over 256Kb while defending a server
Achieve a highscore of over 512Kb while defending a server
Achieve a highscore of over 1Mb while defending a server
Outperform the most seasoned of players!
Outmake the maker!
Build a ridiculously complexe maze
Defend a server using at least 3 Proxy tower programs
Boost a tower program's speed by 300%
Defend the first Challenge Server
Defend the final Challenge Server