Use Stunt cards (spend a action point or a couple healing surges) to do something really exciting at about the power level of an encounter power. This could let them find creative ways out of problems as you learn to tune the encounters to their level.
A single elite can be pretty challenging and fun for them. A solo is out of reach and would get really boring, imo. I ran a same level Kenku Assassin against two pc's yesterday and had it run half way through the encounter. They gave chase and tracked him via skill challenge, then finished the fight. They failed the skill challenge so the Kenku got a surprise round on them. Success would have avoided that.
Commanding troops in an improvised combat would be fun. Combast without battlemaps can also work well for 2 players. It lets you have fast, fluid combats with lots of cinematic descriptions from both sides of the table.
Encounters where they have to influence neutral NPCs to assist them might be fun as well. Minor actions to try to sway the observers to assist them? Then you could simply hand wave a few bad guys away if the observers join the PCs. It removes a threat without swapping dice rolls for a 3-4 more rounds.
A single elite can be pretty challenging and fun for them. A solo is out of reach and would get really boring, imo. I ran a same level Kenku Assassin against two pc's yesterday and had it run half way through the encounter. They gave chase and tracked him via skill challenge, then finished the fight. They failed the skill challenge so the Kenku got a surprise round on them. Success would have avoided that.
Commanding troops in an improvised combat would be fun. Combast without battlemaps can also work well for 2 players. It lets you have fast, fluid combats with lots of cinematic descriptions from both sides of the table.
Encounters where they have to influence neutral NPCs to assist them might be fun as well. Minor actions to try to sway the observers to assist them? Then you could simply hand wave a few bad guys away if the observers join the PCs. It removes a threat without swapping dice rolls for a 3-4 more rounds.