Check out RenewedSolitude3DS instead

Renewed Solitude is an updated version of TCPixel's Halo Revamped for 3DS.

Halo Revamped 3DS

Halo Revamped is a Halo Style Quake Mod using ctrQuake ctrQuake is a free, unofficial port of Quake for the Nintendo 3DS.

Installation guide

• Follow the guide for running homebrew at http://smealum.github.io/3ds/
• Download the latest Revamped.zip from the releases page
• Extract Revamped.zip to the root of your SD card
• Install Revamped.cia using FBI
• Launch Halo Revamped from the Home Menu

Credits

Tevin Dahl (TCPixel) - Halo Revamped Mod
Flaming Ice - Halo Solitude
Felipe Izzo (MasterFeizz) - ctrQuake developer
Rinnegatamante - Sound enhancements

Thanks to

Id Software - Source code of Quake
Smealum and other developers of libctru
TuxSH, J-D-K, PabloMK7