Set Joey's LP Boost α skill to your deck then you can start a duel with 5000 Life Points. You can also use cards regenerating your Life Points that are mentioned above.
How can I achieve "Use Skill 5 times"?
Note that the mission does not require you to achieve it in one Duel (actually you never be able to use skill 5 times in one duel). If you do not know how to set a skill to your deck, check the skill database.
Can you show me the way to achieve Duel Assessment of 3500?
Yes, win a duel against Legendary Duelists Lvl 10 using High Score Cerberus deck. If you do not have the deck yet, just refer the table below and check "How to Get High Score" article for more details.
Win a duel.
No Damage Taken
Win a duel without receiving damage.
Perform a Tribute Summon
Conduct at least one tribute summon.
Activate a Spell
Use at least one Spell card.
Activate a Trap
Use at least one Trap card.
Cards on the Brink
Win a duel when the number of cards in your deck is 0.
You can use Fusion Gate(Field Spell) to avoid using Poly.
You can use Fusion Recovery to get Poly back.
You can use Fusion Recycling Plant to discard cards to get a) Poly easy and b) get Poly back from graveyard.
Choose a lvl 10 LD from the gate + Enemy controller(or Tribute to the Doomed etc.) so that every monster you bring out is stronger than theirs + a way to get rid of your fusion monster.
Guaranteed method unless you purposely sabotage yourself: Make a deck of 20 or more Level 4 monsters with at least 1400 and no drawbacks. Summon monsters, attack with them as much as possible, and beat Yami Yugi 10 times. You literally can't lose without being a complete moron.
Clarify: If you end your turn and your opponent has no more cards in their deck, then you have won a duel by deck out.
lol use paradox brothers for an easy 3500 duel score start with 500 lp and Gate Guardian:
Comeback win = 2500
low lp = 500
over 3000 damage = 500
kill whatever they summon first, put out a second monster, kill their second monster and attack with Guardian for game, so long as you don't attack with guardian when they at 4k to bring them to 250lp then you should get all of those bonuses