Refuge Campaign is a terrible card.

Essentially, it’s PAD Campaign but doubles its price and doubles its payoff. If you compare this to Nico Campaign, Nico gives you net 1 credit after 1 turn, and after 3 turns, it earns you net 7 credits plus a card. Refuge, on the other hand, nets you -2 credits after 1 turn, and requires you to wait 6 turns to match Nico’s earning. Although Refuge has a higher trash cost, you probably don’t want to install it naked, and you probably want to get your money ASAP.

You better have a good target to derez. If you compare this to Eli 1.0, you are paying an extra 2 credits for its rez ability, and that's not a small fee. Sure, you have a better chance to land a brain damage and end a run, but if that's your main reason to play Hákarl, there's a few problem with it:

• 5 credit is a lot at early game.
• Its cost becomes even more prohibitive if you don't have a good derez target.
• At midgame, it becomes less useful once the Runner has a fracter ready.
• Its subroutines can still be broken by Boomerang, Botulus, etc.

So therefore, you are not playing Hákarl for its subroutines; you are playing for its wombo-combo potential. For example, you can derez:

• Nico Campaign to reload 9 extra credits.
• Magnet to host an extra virus card.
• Spin Doctor to draw 4 cards in total.
• Anemone to do another guaranteed 2 net damage.

But the big question is: Is this worth an extra 2 credits over Eli 1.0? So far, there's not a lot of good use of this card, so I'm hoping this will change once the entire Midnight Sun set is released.