I'm not sure how useful repulse is for a stalker, and you might need some blues in your defenses. Also, Entropy Shield, your Integration equivalent, is one of those powers you want to get in as early as possible.
I'm sure someone else can give you more detailed tips. Other than the things I've spotted it seems likea decent build.
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01) --> Energy Punch==> Acc(1) Dmg(3) Dmg(3) Dmg(27) DisDur(34) Acc(36)
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Whats with the stun duration? They shouldn't be standing long enough for it to matter, and I don't think its worth slotting for. You've got your 2 acc and 2 dam, might be better to use this slot else where.
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04) --> Power Shield==> DefBuf(4) DefBuf(9) DefBuf(9) Dmg(15)
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Damage? Is that ment to be an end redux?
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06) --> Assassin's Strike==> Acc(6) Dmg(11) Dmg(11) Rechg(31) Dmg(43)
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Might want another Acc in here.
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08) --> Build Up==> TH_Buf(8) TH_Buf(13) TH_Buf(39)
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Slot for 3 recharge ASAP for PvE, only need ToHits if you're going to PvP.
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10) --> Bone Smasher==> Acc(10) Dmg(13) Dmg(19) Dmg(19) DisDur(39) Acc(39)
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Same as Energy Punch.
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24) --> Entropy Shield==> EndRdx(24) Rechg(25) KB_Dist(25)
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Knockback distance?
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26) --> Repulse==> KB_Dist(26) Rechg(27) KB_Dist(31)
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It's not too great seing as you need foes near you to get end from them.
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28) --> Energy Drain==> EndMod(28) EndMod(29) EndMod(29) EndRdx(31)
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3 recharge, 3 End Mod would be best.
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32) --> Energy Transfer==> Acc(32) Dmg(33) Dmg(33) Dmg(33) Rechg(34)
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Needs another Acc.
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38) --> Overload==> EndMod(38) EndMod(40) EndMod(40) Heal(40) Heal(42)
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2 recharge, 2 Def and 2 heal would be best, but you can mix them around for your playstyle.
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41) --> Total Focus==> Acc(41) Dmg(42) Dmg(42) Dmg(43)
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Bit late for one of your main attacks? Needs another Acc, and either an end redux or recharge.
Personaly, I'd ditch Repulse, move Energy Tranfer up to 26 then Total focus up to 32, get them ASAP.
Oh, and move Build Up to 16, Hasten to 8 and Placate to 12, or do that and move Build Up to 24 and Entropy Shield to 16.
Thats the last of the unmarked edits I'm doing 
So you thought it was alright then 
Thanks for your advice and as i said first attempt at a stalker as i havent played CoV much, the highest stalker i have had was 10ish before deleation.
This is my first attempt at a stalker
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Exported from Ver: 1.7.6.0 of the CoH_CoV Character Builder - (http://sherksilver.coldfront.net/index.php)
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Name: Killah Ghost
Level: 44
Archetype: Stalker
Primary: Energy Melee
Secondary: Energy Aura
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01) --> Energy Punch==> Acc(1) Dmg(3) Dmg(3) Dmg(27) DisDur(34) Acc(36)
01) --> Hide==> DefBuf(1) DefBuf(5) DefBuf(5)
02) --> Kinetic Shield==> DefBuf(2) DefBuf(7) DefBuf(7)
04) --> Power Shield==> DefBuf(4) DefBuf(9) DefBuf(9) Dmg(15)
06) --> Assassin's Strike==> Acc(6) Dmg(11) Dmg(11) Rechg(31) Dmg(43)
08) --> Build Up==> TH_Buf(8) TH_Buf(13) TH_Buf(39)
10) --> Bone Smasher==> Acc(10) Dmg(13) Dmg(19) Dmg(19) DisDur(39) Acc(39)
12) --> Hasten==> Rechg(12) Rechg(15)Rechg(37)
14) --> Super Speed==> Run(14) Run(34)
16) --> Placate==> Rechg(16) Rechg(17) Rechg(17)
18) --> Hurdle==> Jump(18)
20) --> Health==> Heal(20) Heal(21) Heal(21)
22) --> Stamina==> EndMod(22) EndMod(23) EndMod(23)
24) --> Entropy Shield==> EndRdx(24) Rechg(25) KB_Dist(25)
26) --> Repulse==> KB_Dist(26) Rechg(27) KB_Dist(31)
28) --> Energy Drain==> EndMod(28) EndMod(29) EndMod(29) EndRdx(31)
30) --> Grant Invisibility==> Rechg(30) DefBuf(37)
32) --> Energy Transfer==> Acc(32) Dmg(33) Dmg(33) Dmg(33) Rechg(34)
35) --> Conserve Power==> Rechg(35) Rechg(36) Rechg(37)
38) --> Overload==> EndMod(38) EndMod(40) EndMod(40) Heal(40) Heal(42)
41) --> Total Focus==> Acc(41) Dmg(42) Dmg(42) Dmg(43)
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01) --> Power Slide==> Empty(1)
01) --> Sprint==> Run(1)
01) --> Brawl==> Empty(1)
01) --> Assassination==> Empty(1)
02) --> Rest==> Heal(2)
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