Sacred 3
45 Achievements
1,180
40-50h
Sacred Savior
Complete all main missions on Deity difficulty
90
How to unlock the Sacred Savior achievement in Sacred 3 - Definitive Guide
Make sure you do the side missions for the item upgrades before playing on deity difficulty, cause you'll definitely need lots of potions and totems, with some smart bombs for good measure. If possible, save them for boss battles. (This is why playing solo isn't recommended)
Certain bosses are easier than others. Like in my case, the Ice Elemental and Sundrax didn't pose too much of a challenge, nor did the 'battle' with Gloria (The ship). But others like Zane and the Tallicus beast were rather difficult due to their multiple phases. If enemies appear during the battle, at least one person should kill them before they become troublesome, if there's 3/4 players in the lobby. If not, juggle the duties while whaling on the boss.
I highly recommend you play with at least one other person so they can revive you in a pinch, but more is always better. (More chances for survival in the tough boss battles, plus sometimes randoms can drag you to victory ) The missions can be done in any order, and as long as they are 'colored in' (They start off with a grey color), you should unlock the achievement. I joined some missions halfway or late a few times, and it appears to count that, but try joining during the beginning to be safe.
If you equip the block skill and take the 200% reflect dmg upgrade,
All you have to do is keep blocking and ALL enemies including bosses will kill themselves by beating your shield bubble.
In addition to Onyx Grimoire's solution, here is a character setup that I used to solo Deity mode without much difficulty.
Character: Vajra (lvl 50)
Combat Arts: Light - Piercing Shot (skills in Fleshdrill and Bloodletting)
Combat Arts: Heavy - Flash Freeze (skills in Cool as Ice and Ice Age)
Dodge: Maxed Out
Block, Execution, Revive - Didn't use
Armor: Maxed Out
Weapon: Heaven's Reach (skills in Heartseeker and Inhuman Aim)
Weapon Spirits: Battlemage (as high of a level as you can get)
Items: I didn't use too many potions besides the health potions when I get down and energy totems to charge the objective. I would recommend getting max Health Potions (6), max Healing Totem (5), Energy Totem (2).
Essentially with this character, you can pick off the enemies from afar and can defeat enemies with ease. If the enemies start rushing, you can backtrack a bit and the enemies should stop chasing you allowing you to pick them off safely. None of the bosses gave too much trouble since the critical damage should defeat them decently quickly.
Also, there are points in the campaign where you can destroy the objective before the mission updates. If that is the case, you will have to die and restart that section. That destroyed objective won't count for the mission and you'll be stuck at that section.
Deity is very challenging in single player because the level of the enemies scales with the level of your character. In a multiplayer game it scales to the level of the highest character. Thus you'll never get an advantage. If going for this trophy in single player, it might be wise to tackle it once your character level is above 30 but I strongly suggest doing this trophy in multiplayer. Besides the tactical advantage you also have the opportunity to revive each other. Also use this potion trick in multiplayer to ease deity run even more:
One (or several players) quit to the lobby, while at least one player stays in the game. Now the player(s) that quit rejoin(s) the game with health potions refilled. Do this for all players just before a boss fight (best done after reaching the red checkpoint), and you start the boss fight with full health potions. Also works with other potions.
Other than that just make sure you use your character's abilities to its best. No need to rush into close combat with an archer or to attack enemies one by one when you'd have a strong AoE (Area of Effect) skill ready. If you truly coop and revive each other, you just have to worry about reaching the next checkpoint. After that you can always use the potion trick in multiplayer.
Boss battles on Deity are self-explaining. There's basically the same pattern in each boss battle that includes fighting an enemy. Do damage to the boss while evading his/her attacks. Just remember: keep rolling. After a certain amount of health has been taken from the boss, his/her behaviour changes, introducing new spells, attacks etc. Unlike other games, in Sacred 3 the boss' behaviour doesn't change with difficulty so if you're familiar with the Warrior/Champion/Legend boss battles, you can expect the same behaviour but note that the boss has a lot more of health and he/she hits much harder.
Upon completing the game once on any difficulty, you will unlock the Deity difficulty setting for the character you completed the campaign with (not all of them), which is the most arduous. The difficulty achievements do not stack, so you must do each individually.