To start, I would suggest checking out Meadberts primer for manaless Ichroid builds found here:
http://www.themanadrain.com/index.php?topic=35200.0Basically any possible discussion on decklists goes on here and was pretty vital to my playing of Ichorid. But in case you don't have time to read, I'll share my short thoughts.
The biggest discussion is usually about the correct Dread Return package. From what I've read and what I've tested, you either go the FKZ route with 8 cards (4 Dread Return, 2 Cephalid Sage, 2 FKZ) or you go with 2 Dread Return/2 Targets and 4 more disruption pieces (MD Leyline, Unmask, etc). I heavily prefer the latter option as I find that you typically don't need to win right away G1, and the extra disruption just seems better.
As for targets, its typically 4 of them that are discussed (outside of FKZ): Ancestor's Chosen, Angel of Despair, Sundering Titan, and Eternal Witness. I'd check the thread for a more full discussion of these, but in an unknown meta, I'd probably pack a Chosen and Despair. Its hard to really go wrong though.
As far as the rest of the deck goes, the only change I would make is -1 Undiscovered Paradise for +1 Strip Mine. 8 lands postboard should be sufficient, you'll never need mana game 1 (outside the random darkblast and MAYBE having to hardcast a Narc/Thug), and Strip Mine will randomly win games for you.
Last thing to touch up is the board. The only change I would make is a second Darkblast for the Recall...which just seems really random.
I find Ichorid is pretty good against the field...though its kind've dependent on your opponent's board. You'll win like 95% of G1's, so knowing how to board against each matchup is key. You'll bring in the full board almost every game (except for Darkblast), usually dropping some combination of Leylines/Unmask/Chalice and random 1 of's such as Thug, Imp, Ichorid, etc. Also to note, I almost always side out the dread return package (leaving just 1 Dread Return for the random Grave Troll and to make tokens) because its typically just not necessary.
As noted at the top, its definitely worth your time to read through that thread, as it covers everything. Good Luck!