A check point is an important place in games. However, in some games, the items which players have got before can be respawned in the check points. This bad design makes games without any challenging.
Example: Resident Evil 5
In Resident Evil 5, some items can repeatedly be got when players leave their game at a checkpoint. Players just leave their game, login in the game again. When the items respawn, players can get the items again and sell for money.