>>5872941>What units you using?Ogre 4 New Yellow, 2 Pink (70SPD)
Asagi 4 New Yellow, 2 Pink
Bonnie 4 Black, 2 Pink
Felicia 4 New Red, 2 New Cyan
Mai 4 New Green, 2 Blue
Mai 4 New Green, 2 Blue
>Having hard timeThere's probably better methods but this is what I'd recommend.
Leader: 100 Luck Ogre > Other high luck unit OR One of the attackers/restorers that has a beneficial leader skill
Felicia: Felicia
Attackers: Asagi > Ogre > Bonnie > Schoolgirl Asuka > Gosha Ingrid > NY Asuka > Clone Asagi
Restorer: Mai > Sonico > Valentine Minasaki > Gosha Twins > Some other healer (Skill 2 > Ougi)
Support: Mai
If one of your units has a speed lower than your restorer/support Mai then put 2 whites on the restorer with 4 new greens and use a support Mai with the same setup, otherwise your restorer and support Mai should have 4 new greens and 2 blues.
Use your prefered attack equipment set ups, 4 new yellow and 2 pink is viable for all but ogre (although if your team's strong enough it may be worth it), but 4 black/4 orange and 2 pink is obviously much safer.
Felicia will hardly deal any damage with her ougi so you're better off using her as bait with 4 new reds and 2 whatever you feel like. 2 new cyan's is probably safest in case she gets targeted heavily at the start.
Using some small SP restores at the start of the battle on your restorer/support Mai can get everything running smoothly.
If you still can't do it post a screenshot of all your units and I'll recommend you a team.
>are these units really worth it ?Getting them to skill 5 is, especially Gonza he's the first unit that can petrify enemies.
100 Luck, it depends. 80 Luck units are kind of a wasted space just for a high chance of a bonus drop whereas these units can actually be useful and guarantee a bonus drop. If you can't consistently beat him then just stick to getting a skill 5, otherwise if you feel like it and feel it's worth it go for 100 luck.