Trove

Reaching Level 20 is easy enough, however there are a few things to keep in mind which will make this go faster.

1. Take advantage of XP Bonus days/weeks. Every Saturday is a bonus XP day wherein you gain 50% more XP for adventuring and wins in the Arena. One week of every 4 is a Double XP week wherein all XP gains are doubled. These bonuses can stack for a total of 150% extra XP on the Saturday of that week.

2. Adventure at higher levels. Each world has a recommended level range and a minimum PR(Power Rank). Adventuring in a world with a higher recommended level range than your current level will grant you bonus XP. As an example, the Fae Forest world has a recommended level range of 10-11 and a minimum PR of 250. Candoria has a recommended level range of 12-14 and a minimum PR of 400. A character with a level of 10-11 and a PR of 400 or higher could adventure in Candoria and gain bonus XP until hitting level 12. Note that the bonus does not get higher if you go 2 worlds or more above your recommended range.

3. Outpost Adventures. Once you hit 700 PR, you can access the Neon City world. In the Luminopolis areas, it's possible to find Resistor Outposts with NPCs you can talk to to receive adventures. These are all short and simple, and will grant XP equivalent to 10 1-star dungeons upon completion. It's possible to gain levels in minutes by repeating these multiple times.

4. Patron. This is Trove's 'premium status', and having it will grant a 50% XP boost across the board and double the bonus XP received from the Saturday Bonus. It can be bought either for real money or Credits, Trove's 'premium currency', which can also be bought either for real money or for Flux on the marketplace.