As of this writing the Assassin is still only available for MC. Hopefully next month more people will start playing this mech because it really is amazing. Keep forgetting my UAV/coolshots though :S
Surprised this little booger isn't getting more love here. Very fun to play despite my limited experience with lights/fast mediums. Rolling a fairly standard 3xASRM6 on an ASN-23, though with a bit more ammo than normal because I'd been running out without the missile rack skills unlocked and never adjusted the build after I did. Turned out to be a convenient mistake, heh.
ASN-21 Build SRMs : https://mechspecs.com/threads/asn-21-crozzma-2xsrm6-2xsrm4-3xjj-xl300-alt-xl280.15239/
ASN-23 Build : 2xSNPPC, 2xSRM4 : https://mechspecs.com/threads/asn-23-bionic-combatant-2xsnppc-2xsrm4-1xjj-xl245.18388/
Build;SRM6A,SPL https://mechspecs.com/threads/asn-27-eversor-2-srm6s-a-3-spls-jj-ecm-sa-xl280-alt.12801/