Sergeants can be lured towards a piece of armor or a medkit. You do like this:
.#
@#
./.....h
.#Then you close the door, drop a medkit behind the door (or else you'll get shot while dropping) and back off:.#
@#
+/.....h
.#Then wait until a former would show its face in the door. As he does, you WHACK him! With Brute 2 and a knife, you would have some serious 85%-ish chance to oneshot him outright. Even if he'd survive, say he wears an armor and you're luring him with a medkit, he'll do a melee attack instead of shooting at you point blank, that attack deals a mere 1d3 (1-3) damage, with your default blue armor it'll get reduced to strict one. Here have another whack, stupid zombie.
Another config you might go for is like this:..###
.@###
.+......hTo achieve this, first drop a piece of random ammo to occupy space underneath you, then a medkit - I'm not sure if the medkit would drop below at 100+ rate, however you can also drop a medkit in either position 1, 3 or 4 instead (numpad wise, the position here is 2), then a former will still be able to see and get lured to it, but it may come too broad regarding the corner and see AND shoot you, so watch it. (I'm not a good specialist at luring random stuff into melee range, har har, but I'm learning slowly)
And, you cannot lure imps like this, so I have options of either waiting out the timer hoping a nearby imp will eventually drift into the doorway, or going on the hunt and having him fireball me. Multiply this over a sheer number of UV imps - result a dead marine at about level 4. Sometimes I survive to level 6 instead, thanks to CC having a lot of zerks to let me heal up and cause some havoc, and sometimes my luck lasts to Anomaly ambush - then deteriorates. Hum.
