The raids...

[Docha⚜]

I think the raids are very hard and there are too much monster and 2 portal is too much

[Kyrros]

Yeah, it's a bit of a race against time.
1. Do as much digging and harvesting of basic supplies/resourcecs as you can without completing quests or gaining as little experience as possible - the timer doesn't start until level 4. 2. Once the timer starts - then you can speed through as much crafting and quests as you can You want to level up as quick as possible with quests and crafting to get as many new dwarves as possible. Once you get 7 or 8 dwarves, it makes it easier.
3. Just make basic weapons and basic armors for each slot to help them survive. After that, some traps to help soak up some damage/slow monsters down.
4. Also make sure you have enough beds to make all your Dwarves rest up to full before the portal opens up. The higher your fortress' comfort level, the quicker your dwarves rest to full.

5. Sometimes, a random map just doesn't give you the needed supplies. - don't be afraid to restart the map if it doesn't give you what you need withon east reach of home. Also, make sure you use all of your mana before each level up, as you get a complete refill each time. By the time I've reached level 6 or 7, I usually have a portal or two with 100+ mins sitting on the map ready to be used - usually at least 1 near the giant stone mountain on each map, that I level down for free stone.

Hope it helps.

[Docha⚜]

ok I go to trying this technic

[Deth Invictus]

An interesting bug I've noticed is the fact that the monster waves do no damage if you are focussed somewhere else on the map. Keep your dwarves out of harms way and you are golden. Go deeper.

[Docha⚜]

Interesting I will try both techniques at the same time ^^

[Killer00100]

One trick I do is to build many totems and use them to expand base to left and right as much as possible as portal will open about 20 blocks away from border of safe area. I even push portals out to the sea so no need to deal the raid at all (until they update gargoyle which can fly, and make totem harder to craft).