In addition to varying the game difficulty setting, some players take on challenges to complete the game under artificial restrictions. Players typically attempt challenges in order to raise the difficulty level, test their skills, add variety to their play, and push the limits of what is possible in the game.
In addition to the challenges listed on this page, higher game difficulty settings such as Expert Plus, Expert++, Iron Man and Time Attack modes can also be considered as challenges. The challenges listed here can be attempted at different game difficulty settings, and can be combined with other challenges, such as No Items/Far Travel.
The Agent Alone challenge was first proposed on the official Invisible, Inc. forum by Celestael. The challenge can be simplified by playing with the Lone Start mod, which allows you to start the game with just one agent; this adds to the difficulty since you cannot take items from the second agent, or use them to distract guards in the first mission.
The Far Travel challenge is to beat the game while only infiltrating missions which have the greatest travel time on the world map. If there is more than one mission option with the same greatest travel time, you may choose which to infiltrate.
The No Incognita challenge is to beat the game without using any programs.
The Snail Legs challenge is to beat the game starting with Dr. Xu and Archive Sharp, and without upgrading their Speed skill level. (This also means not installing the Kinesiology Brain Chip augment.) The challenge is named because these two agents have 1 AP less than other agents.
The Always Sprint challenge is to beat the game while only sprinting.
The Maximum Daemons challenge is to beat the game with various restrictions relating to daemons:
The daemon-related programs are Bless, Brimstone, Daemon Sniffer, Faust, Fool, Hunter, Ritual and Taurus. It is recommended to play with the Scrolling Daemons mod as there will be many daemons active at the same time, and the Programs Extended mod which adds several new daemons and daemon-related programs. If playing with the New Items and Augments mod, it is recommended to disable “Starting Agents Rebalance” for the vanilla Antiviral Proxy effect.
The Maximum Daemons challenge was proposed by wodzu_93 and Anistuffs. Because the challenge requires starting with Ritual, it can only be attempted on the Nintendo Switch edition of the game, or when playing with the Switch Content mod.