trigger reading/secrets help new castlevania requiem 2.7

[dracula0303]

hi this is my first request i don't know if this is right section, but anyways here's what i need
the map has a lot of secret heroes bosses events etc etc.. i unprotected(this one is the clean one) it to read jass triggers related to secrets and i'm stuck at a few secrets
1- there's a trigger for minions that gives a hero doppelganger i know its related to the hammer from a blacksmith and the mirror in the castle but cant figure the last condition..
2- there's an even for red where lord snakula joins the game as red's new hero i have absolutly no idea how to do it...
3-another event for red where jochiam overthrows walter(a secret hero for red where u type a code 'true darkness' and attack his coffin) and becomes red new hero dunno any conditions....
4-an event i have no idea for whom nor its conditions but i know it has a msg text 'An incredible evil has broken its way through the barriers of reality...Astaroth' i persume its an end game event like lisa tepes for the vampire hunters where it needs all other slayers dead
5-didn't read fully this one yet but couldn't assemble much of what i read but it contains this sentence 'The brutal Ogiderin has been awoken' maybe a minion event(secret hero)?

anyways i need help figuring out these secrets as i'm a fan of the map i don't even know if its offical version but if any help it's appreciated

cv2_7.7.w3x