Suicide and officer commanders

[Killer Queen 65]

I am trying to finish off the police pistol to get it mastered and my next set of achievements is 20 suicide offer heart kills and 20 officer commander heart kills.
What are the differences between them and where are they to be found? None of the guides show the difference types of officer or say where they are to be found.
Anyone any ideas please?

[Neil]

the suicide officer is more fat than the commander officer and he also spawns suiciders.
you can check the album to see how he looks like.
i dont remember which map they first shows up but i dont think he is in the first 3 missions.

[Harbi]

There is a guide to enemies with pictures, go to records > Sticker Album > Officers

Here's where to farm Suicide Generals, Commanders, Suiciders and enraged zombies:

- Mission: Rotten Coast / Chapter: Village of Darkness
2 min in, a cutscene will play, introducing you to the Suicide General enemy. Restarting that checkpoint, you can farm him and lots of suiciders for other challenges.

- Mission: Molten Nightmare / Chapter: The Final Hell Tower
A couple of mins in, you will be picking up the first explosive canister. Two Commanders will spawn. Restarting that checkpoint to farm them, alternatively, you can farm enraged zombies by hiding and letting the commanders spawn infinite numbers of them.

[Killer Queen 65]

Thank you both very much. Didn't think of looking at the sticker album to see what they look like! Will try both of those missions.
Thanks

[Duiof]

Last part in the Zoo is better for regular commanders, if you put the enemies to 4 players you get like 10 of em more or less straight outside the saferoom (admittedly with some snipers and one flamer but meh).

[Harbi]

^ But those are Necromancers, not Commanders, don't know if they count. Although you are right about configuring the game to 4 players.

[Killer Queen 65]

Thanks. Sometimes playing 4 players is the only way. The police pistol needed 25 medic headshots and the only way to do that was dead ahead chapter 2 + 3 on 4 players to get 3 per level