Gain critical evasion boost 5 times

Exactly that.  We are all at different stages and i tried many ways to get the feat but i was overkilling everything

Ask fellow guildees if they have guard and put in a leader so you can borrow.  The feat isnt really that hard, its not killing them right away before the buff lands.  Pick a node where you dont destroy everyone and get a few Temple Guard turns in.  It is a bit of an ersehole task, overkill is much seen,

And if not eligible for that tier, you can use Galactic War. 

If TG is even minimally relic'd you use him as lead with Wat + r2, bb8 & C-3PO. Threepio helps him get his specials off CD faster. 

Jobbie is correct that JMMWt4 is better, but I just don't want anyone to think they're out of luck if they don't qualify for that. Even a minimal TG can be used in Galactic War with some other relic tank soaking up hits. GK lead, maybe? 

If lucky enough to have started JMMW then tier 4 using temple guard is very very easy

Omega (Fugitive)