I have 15 out of 23. The only ones missing that I still really care about are Icebreaker and Gjallarhorn. I can live without the other six, though eventually I want to collect them all. Also missing: Hard Light, Monte Carlo, Red Death, 4th Horseman, Thunderlord, and Universal Remote. I still have yet to upgrade MIDA, Bad Juju, and Invective. Everything else is 2.0 already. Well except Vex, but there's no upgrading that.