Just survived my first Siege! AMA

[ProjectXa3]

So I have never really gotten far in my previous games years ago, and this is a milestone for me! I actually won it fairly easily because Cass/basebuilder, but it was still fun! Basically my miner/sharpshooter won a rifle duel with their oaf at extreme range with the bolt-action, then picked off their mortar operator before he could get a second shot off with the HE rounds (he missed the base AND a husky by a tile on the first!) before they broke ranks and tried to charge past his position to rush the base themselves with autopistols, grenades, and a shotgun! In the end only the shotgunner was left alive to run off the map and leave me with a third mortar and some survival meals to take for my own!

[Canute]

That's my standard tactik for sieges.
As soon they land, i grab all colonist and rush to their location (It only could be difficult if you play on large maps).
Soon as their supplies drop down i start attacking.
If you want that they assault your base, try to snipe the mortar, once they are destroyed they assault you.
Some mellee with shield belts a bit ahead should prevent that they shoot at your range pawns.